pretec rock bolts

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  • Pretec Group – Rock support – combination bolts with

    Combination bolts are effective for immediate work protection at the face after torque tensioning, and when later fully grouted, can be classified as permanent support. Workers are installing rock bolts in the face area while grouting of the bolts takes place at a convenient time and distance behind the face (typically about 50m).

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  • Corporate – Pretec Group - Pretec Group – Rock support

    Pretec China (Zhejiang Pretec Metal Products Co Ltd) moved to new factory, 10 000m2. Mechanical production of rock bolts and powder coating. Pretec started to work in the tunnel industry with rock bolts and products for water and frost proofing. 2009. Pretec China (Zhejiang Pretec Metal Products Co Ltd) was established in China, Haining ...

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  • NC-Bolt - Pretec AS

    2019-9-5u2002·u2002The NC-Bolt may be used under most ground conditions, except when very high rock stresses may produce large radial deformations or strain bursting. We produce two types of combination bolts - NC-Bolt (rebar bolt) and Pc-Bolt™(tube bolt). Product data sheets and brochures for both bolt types can be downloaded from www.pretec.no.

    Get Price
  • Zhejiang Pretec Metal Produtcs Co Ltd.

    Pc-Bolt. Pc-Coat. More. Zhejiang Pretec Metal Products Co., Ltd. Was Established In 2008 And Officially Put Into Production In June 2010. Company was originally located in No. 1-1 Danmei Road, Economic and Technological Development Zone, Haining City, covering an area of 20 mu. With the development of the company, we moved to the new factory ...

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  • Project References – Pretec Group - Rock support

    Products supplied: Mainly NC-bolts. Also simple rebar bolts and self drilling anchors. All in Pc-coating. The Eysteroy-tunnel is the first of two sub-sea tunnels being built by NCC on the Faroe Islands, and Pretec is happy to have signed the contract for rock support products.The materials will be delivered during a 3 years period.

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  • NC-Bolt - Pretec AS

    2018-12-11u2002·u2002of corrosion protection for bolts, but to classify the exposure level may be difficult. One mitigation strategy may be to use the well protected Combination Bolt along all of the tunnel length. The NC-Bolt may be used under most ground conditions, except when very high rock stresses may produce large radial deformations or strain bursting.

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  • Pc-Bolt - Pretec

    2019-10-4u2002·u2002The Pc-Bolt™ is a combination bolt that has several additional benefits and functions than traditional rock bolts. Once the bolt has been set in the drillhole, it performs imme-diately as temporary rock support. Thereafter it is grouted and performs as a fully grouted rock bolt. The bolt is easily placed

    Get Price
  • NC-Bolt - Pretec AS

    2018-12-11u2002·u20024 NC-bolt - combination bolt Technical information Dimensjon Tension area A S Threaded rod Yield stress Reh Failure stress Rm Ductility Agt M20x2,5 245-314 N/mm2 Min. 500 N/mm2 Min. 600 N/mm2 Min. 8% M22x2,5 303-380 N/mm2 Min. 630 N/mm2 Min. 790 N/mm2 Min. 7,5% M33x3,5 694-804 N/mm2 Min. 500 N/mm2 Min. 600 N/mm2 Min. 8% Dimension Material Thread length Weight …

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  • Zhejiang Pretec Metal Products Co Ltd - The Tunnelling

    2021-10-21u2002·u2002Zhejiang Pretec Metal Products Co Ltd Company Details Member of the Norwegian Pretec Group, we produce and offer to the market rock anchor bolts with particularly long service life using PC-Coat corrosion protection (hot dip galvanizing, zinc manganese phosphating and epoxy powder coating).

    Get Price
  • Chinapretec Sn Rock Bolt - China Sn Bolt, Rock Bolt in Bolts

    2016-3-30u2002·u2002Chinapretec Sn Rock Bolt, Find details about China Sn Bolt, Rock Bolt in Bolts from Chinapretec Sn Rock Bolt - Zhejiang Pretec Metal Products Co., Ltd

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  • ChinaPretec SN Rock Bolt(id:9881459). Buy China SN rock ...

    Our team. Product Description. ChinaPretec SN Rock Bolt, also known as mortar embedded concrete reinforcement steel anchors or Store-Norfors-Anchors (named after the first place of installation), are used for rock reinforcement inunderground Mining and Tunneling.. ChinaPretec SN Rock Boltcan be supplied in plain, hot dip galvanized and Pc-Coat™ versions.To achieve a long …

    Get Price
  • Chinapretec Resin Rock Bolt(id:9863727). Buy China resin ...

    Chinapretec Resin Rock Bolt(id:9863727). View product details of Chinapretec Resin Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

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  • China Rock Bolt manufacturer, Hollow Grouting Anchor Bolt ...

    2016-3-30u2002·u2002China Rock Bolt supplier, Hollow Grouting Anchor Bolt, Combinational Rock Bolt Manufacturers Suppliers - Zhejiang Pretec Metal Products Co., Ltd

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  • ChinaPretec Expansion Shell Rock Bolt(id:9881441). Buy ...

    ChinaPretec Expansion Shell Rock Bolt(id:9881441). View product details of ChinaPretec Expansion Shell Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

    Get Price
  • NC-Bolt - Pretec AS

    2019-9-5u2002·u2002The NC-Bolt may be used under most ground conditions, except when very high rock stresses may produce large radial deformations or strain bursting. We produce two types of combination bolts - NC-Bolt (rebar bolt) and Pc-Bolt™(tube bolt). Product data sheets and brochures for both bolt types can be downloaded from www.pretec.no.

    Get Price
  • Pc-Bolt - Pretec

    2019-10-4u2002·u2002The Pc-Bolt™ is a combination bolt that has several additional benefits and functions than traditional rock bolts. Once the bolt has been set in the drillhole, it performs imme-diately as temporary rock support. Thereafter it is grouted and performs as a fully grouted rock bolt. The bolt …

    Get Price
  • Company Profiles_About__Zhejiang Pretec Metal Produtcs Co Ltd.

    Pretec Group is currently one of the most important suppliers of anchor bolts for underground engineering in Norway and the Nordic region. The group currently owns 6 companies in Norway, Sweden, Finland, Denmark, Belgium and China. Zhejiang Pretec Metal Products Co., Ltd. is the only R&D base of Pretec Group in China.

    Get Price
  • Zhejiang Pretec Metal Products Co Ltd - The Tunnelling Journal

    2021-10-21u2002·u2002Zhejiang Pretec Metal Products Co Ltd Company Details Member of the Norwegian Pretec Group, we produce and offer to the market rock anchor bolts with particularly long service life using PC-Coat corrosion protection (hot dip galvanizing, zinc manganese phosphating and epoxy powder coating).

    Get Price
  • Home - Pretec

    2021-10-14u2002·u2002Pretec Finland Oy Ab was established in March 2013. We sell and store products for construction and infrastructure industry. Pretec Group operates in Finland, Norway, Sweden, Denmark and Belgium. Pretec Group also has its own production factory in China (Pretec China), which was built in 2010. We specialize in: Rock support Frost and water ...

    Get Price
  • Chinapretec Sn Rock Bolt - China Sn Bolt, Rock Bolt in Bolts

    2016-3-30u2002·u2002Chinapretec Sn Rock Bolt, Find details about China Sn Bolt, Rock Bolt in Bolts from Chinapretec Sn Rock Bolt - Zhejiang Pretec Metal Products Co., Ltd

    Get Price
  • ChinaPretec SN Rock Bolt(id:9881459). Buy China SN rock ...

    Our team. Product Description. ChinaPretec SN Rock Bolt, also known as mortar embedded concrete reinforcement steel anchors or Store-Norfors-Anchors (named after the first place of installation), are used for rock reinforcement inunderground Mining and Tunneling.. ChinaPretec SN Rock Boltcan be supplied in plain, hot dip galvanized and Pc-Coat™ versions.To achieve a long service life, the ...

    Get Price
  • Chinapretec Resin Rock Bolt(id:9863727). Buy China resin ...

    Chinapretec Resin Rock Bolt(id:9863727). View product details of Chinapretec Resin Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

    Get Price
  • China Rock Bolt manufacturer, Hollow Grouting Anchor

    2016-3-30u2002·u2002China Rock Bolt supplier, Hollow Grouting Anchor Bolt, Combinational Rock Bolt Manufacturers Suppliers - Zhejiang Pretec Metal Products Co., Ltd

    Get Price
  • ChinaPretec Expansion Shell Rock Bolt(id:9881441). Buy ...

    ChinaPretec Expansion Shell Rock Bolt(id:9881441). View product details of ChinaPretec Expansion Shell Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

    Get Price
  • NC-Bolt - Pretec AS

    2019-9-5u2002·u2002The NC-Bolt may be used under most ground conditions, except when very high rock stresses may produce large radial deformations or strain bursting. We produce two types of combination bolts - NC-Bolt (rebar bolt) and Pc-Bolt™(tube bolt). Product data sheets and brochures for both bolt types can be downloaded from www.pretec.no.

    Get Price
  • Pc-Bolt - Pretec

    2019-10-4u2002·u2002The Pc-Bolt™ is a combination bolt that has several additional benefits and functions than traditional rock bolts. Once the bolt has been set in the drillhole, it performs imme-diately as temporary rock support. Thereafter it is grouted and performs as a fully grouted rock bolt. The bolt is easily placed

    Get Price
  • Company Profiles_About__Zhejiang Pretec Metal Produtcs

    Pretec Group is currently one of the most important suppliers of anchor bolts for underground engineering in Norway and the Nordic region. The group currently owns 6 companies in Norway, Sweden, Finland, Denmark, Belgium and China. Zhejiang Pretec Metal Products Co., Ltd. is the only R&D base of Pretec …

    Get Price
  • Zhejiang Pretec Metal Products Co Ltd - The Tunnelling

    2021-10-21u2002·u2002Zhejiang Pretec Metal Products Co Ltd Company Details Member of the Norwegian Pretec Group, we produce and offer to the market rock anchor bolts with particularly long service life using PC-Coat corrosion protection (hot dip galvanizing, zinc manganese phosphating and epoxy powder coating).

    Get Price
  • Home - Pretec

    2021-10-14u2002·u2002Pretec Finland Oy Ab was established in March 2013. We sell and store products for construction and infrastructure industry. Pretec Group operates in Finland, Norway, Sweden, Denmark and Belgium. Pretec Group also has its own production factory in China (Pretec China), which was built in 2010. We specialize in: Rock support Frost and water ...

    Get Price
  • Chinapretec Sn Rock Bolt - China Sn Bolt, Rock Bolt in Bolts

    2016-3-30u2002·u2002Chinapretec Sn Rock Bolt, Find details about China Sn Bolt, Rock Bolt in Bolts from Chinapretec Sn Rock Bolt - Zhejiang Pretec Metal Products Co., Ltd

    Get Price
  • ChinaPretec SN Rock Bolt(id:9881459). Buy China SN rock ...

    Our team. Product Description. ChinaPretec SN Rock Bolt, also known as mortar embedded concrete reinforcement steel anchors or Store-Norfors-Anchors (named after the first place of installation), are used for rock reinforcement inunderground Mining and Tunneling.. ChinaPretec SN Rock Boltcan be supplied in plain, hot dip galvanized and Pc-Coat™ versions.To achieve a long service life, the ...

    Get Price
  • Chinapretec Resin Rock Bolt(id:9863727). Buy China resin ...

    Chinapretec Resin Rock Bolt(id:9863727). View product details of Chinapretec Resin Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

    Get Price
  • China Rock Bolt manufacturer, Hollow Grouting Anchor

    2016-3-30u2002·u2002China Rock Bolt supplier, Hollow Grouting Anchor Bolt, Combinational Rock Bolt Manufacturers Suppliers - Zhejiang Pretec Metal Products Co., Ltd

    Get Price
  • ChinaPretec Expansion Shell Rock Bolt(id:9881441). Buy ...

    ChinaPretec Expansion Shell Rock Bolt(id:9881441). View product details of ChinaPretec Expansion Shell Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

    Get Price
  • NC-Bolt - Pretec AS

    2019-9-5u2002·u2002The NC-Bolt may be used under most ground conditions, except when very high rock stresses may produce large radial deformations or strain bursting. We produce two types of combination bolts - NC-Bolt (rebar bolt) and Pc-Bolt™(tube bolt). Product data sheets and brochures for both bolt types can be downloaded from www.pretec.no.

    Get Price
  • Pc-Bolt - Pretec

    2019-10-4u2002·u2002The Pc-Bolt™ is a combination bolt that has several additional benefits and functions than traditional rock bolts. Once the bolt has been set in the drillhole, it performs imme-diately as temporary rock support. Thereafter it is grouted and performs as a fully grouted rock bolt. The bolt is easily placed

    Get Price
  • Company Profiles_About__Zhejiang Pretec Metal Produtcs

    Pretec Group is currently one of the most important suppliers of anchor bolts for underground engineering in Norway and the Nordic region. The group currently owns 6 companies in Norway, Sweden, Finland, Denmark, Belgium and China. Zhejiang Pretec Metal Products Co., Ltd. is the only R&D base of Pretec …

    Get Price
  • Zhejiang Pretec Metal Products Co Ltd - The Tunnelling

    2021-10-21u2002·u2002Zhejiang Pretec Metal Products Co Ltd Company Details Member of the Norwegian Pretec Group, we produce and offer to the market rock anchor bolts with particularly long service life using PC-Coat corrosion protection (hot dip galvanizing, zinc manganese phosphating and epoxy powder coating).

    Get Price
  • Home - Pretec

    2021-10-14u2002·u2002Pretec Finland Oy Ab was established in March 2013. We sell and store products for construction and infrastructure industry. Pretec Group operates in Finland, Norway, Sweden, Denmark and Belgium. Pretec Group also has its own production factory in China (Pretec China), which was built in 2010. We specialize in: Rock support Frost and water ...

    Get Price
  • Chinapretec Sn Rock Bolt - China Sn Bolt, Rock Bolt in Bolts

    2016-3-30u2002·u2002Chinapretec Sn Rock Bolt, Find details about China Sn Bolt, Rock Bolt in Bolts from Chinapretec Sn Rock Bolt - Zhejiang Pretec Metal Products Co., Ltd

    Get Price
  • ChinaPretec SN Rock Bolt(id:9881459). Buy China SN rock ...

    Our team. Product Description. ChinaPretec SN Rock Bolt, also known as mortar embedded concrete reinforcement steel anchors or Store-Norfors-Anchors (named after the first place of installation), are used for rock reinforcement inunderground Mining and Tunneling.. ChinaPretec SN Rock Boltcan be supplied in plain, hot dip galvanized and Pc-Coat™ versions.To achieve a long service life, the ...

    Get Price
  • Chinapretec Resin Rock Bolt(id:9863727). Buy China resin ...

    Chinapretec Resin Rock Bolt(id:9863727). View product details of Chinapretec Resin Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

    Get Price
  • China Rock Bolt manufacturer, Hollow Grouting Anchor

    2016-3-30u2002·u2002China Rock Bolt supplier, Hollow Grouting Anchor Bolt, Combinational Rock Bolt Manufacturers Suppliers - Zhejiang Pretec Metal Products Co., Ltd

    Get Price
  • ChinaPretec Expansion Shell Rock Bolt(id:9881441). Buy ...

    ChinaPretec Expansion Shell Rock Bolt(id:9881441). View product details of ChinaPretec Expansion Shell Rock Bolt from ZheJiang Pretec Metal Products Co.,Ltd manufacturer in EC21

    Get Price
  • NC-Bolt - Pretec AS

    2019-9-5u2002·u2002The NC-Bolt may be used under most ground conditions, except when very high rock stresses may produce large radial deformations or strain bursting. We produce two types of combination bolts - NC-Bolt (rebar bolt) and Pc-Bolt™(tube bolt). Product data sheets and brochures for both bolt types can be downloaded from www.pretec.no.

    Get Price
  • Pc-Bolt - Pretec

    2019-10-4u2002·u2002The Pc-Bolt™ is a combination bolt that has several additional benefits and functions than traditional rock bolts. Once the bolt has been set in the drillhole, it performs imme-diately as temporary rock support. Thereafter it is grouted and performs as a fully grouted rock bolt. The bolt is easily placed

    Get Price
  • Company Profiles_About__Zhejiang Pretec Metal Produtcs

    Pretec Group is currently one of the most important suppliers of anchor bolts for underground engineering in Norway and the Nordic region. The group currently owns 6 companies in Norway, Sweden, Finland, Denmark, Belgium and China. Zhejiang Pretec Metal Products Co., Ltd. is the only R&D base of Pretec …

    Get Price
  • Zhejiang Pretec Metal Products Co Ltd - The Tunnelling

    2021-10-21u2002·u2002Zhejiang Pretec Metal Products Co Ltd Company Details Member of the Norwegian Pretec Group, we produce and offer to the market rock anchor bolts with particularly long service life using PC-Coat corrosion protection (hot dip galvanizing, zinc manganese phosphating and epoxy powder coating).

    Get Price
  • Home - Pretec

    2021-10-14u2002·u2002Pretec Finland Oy Ab was established in March 2013. We sell and store products for construction and infrastructure industry. Pretec Group operates in Finland, Norway, Sweden, Denmark and Belgium. Pretec Group also has its own production factory in China (Pretec China), which was built in 2010. We specialize in: Rock support Frost and water ...

    Get Price
  • China PC-Bolt R27/15 Combination Bolt/Rock Support (G4 ...

    China PC-Bolt R27/15 Combination Bolt/Rock Support (G4), Find details about China Combination Bolt, Grouting Rock Bolt from PC-Bolt R27/15 Combination Bolt/Rock Support (G4) - Zhejiang Pretec Metal Products Co., Ltd

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  • Buyer's Guide - The Tunnelling Journal

    Zhejiang Pretec Metal Products Co Ltd. Member of the Norwegian Pretec Group, we produce and offer to the market rock anchor bolts with particularly long service… More Information +86 573 87878119

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  • Compass Finance

    Pretec Group AS and its subsidiary Pre Cast Technology AB produce and sell products for the construction industry. Pretec supplies a wide range of products for a variety of industries, but is mainly specialised in heavy fasteners, rock support, water and frost protection for tunnels, bolts and chemical products for the concrete industry.

    Get Price
  • DSI New Developments in Yieldable Rock Bolts

    2019-12-12u2002·u20021 DSI New Developments in Yieldable Rock Bolts 2012 Dynamic Ground Support Application Symposium Thursday, September 13th, 2012 Renn Oler, Engineering Director Dywidag Systems International (DSI) Underground Sys Inc.

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  • EPDs - EPD Norge

    Pretec Norge AS. Rock bolt accessories Pc Coat. Elementsør AS. Trapp og repos (B30-M60) Jotun A/S. Jotashield Tex Medium, Jotun Saudi Co. Ltd. (Jeddah) Jotun A/S. JOTAPROFF Dynamic 05, Jotun A/S. Gunnar Holth Grusforretning AS. Naturgrus og Sand produsert ved avd Laugslet, Indre Østfold.

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  • Rockfall protection systems - DT Mesh

    DT Mesh. Our DT Mesh is a core component of our MacRO rockfall mitigation and natural hazard protection application area. It is one of a range of mesh systems that are selected according to our analysis of the project site conditions and client requirements. Used for over 50 years, our DT Mesh is engineered from our double twisted hexagonal ...

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  • Defining the future underground - Normet

    DEFINING THE FUTURE UNDERGROUND. Normet is a fast growing and innovative company with a mission to lead the transformation into a more digital and sustainable tomorrow. Within underground mining and tunnelling, we have amassed process expertise in over thousands of projects all over the world. 50. years of experience.

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  • MOTOR PROTECTION TABLES - Littelfuse

    2014-5-23u2002·u20022014 l por-ar ® p 2 motor protection guide motor protection tables motor s.f. = 1.15 or hp full load amps without overload relays with overload relays switch or s.f. = less

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  • 7 Types of Angle Grinder Discs and Their Uses -

    2020-9-10u2002·u2002In practice, these wheels are often able to efficiently cut through bolts, plate metal, rebar, and more – so long as the wheel itself is of adequate width. This is because thinner cut-off wheels tend to flex more during a cutting process. This makes them unstable and prone to failure (and sometimes, even shattering) when making deep cuts into ...

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