zuanlongbits@gmail.com

+86-029-82612068

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Email: zuanlongbits@gmail.com

Tel: +86-029-82612068

Fax: +86-029-82612068

Address:No 66, Changming Road, Xi'an, Shaanxi Province, China

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roof bolting bullet drill bit size

  • China ISO Manufacturer Of PDC Roof Anchor Bolt Bit Customized Anchor Bolt Bit Sizes

    Contact NowChina ISO Manufacturer Of PDC Roof Anchor Bolt Bit Customized Anchor Bolt Bit SizesZLONG Company professionally produces PDC drill bits,diamond drill bit,drill pipes and also R&D new products as per customers'request.All the products under control of ISO9001:2000 quality system and passed the inspection of Beijing Rock-drilling Machine Inspect Center and some of them obtained National patent.After several years' develop,ZLONG products have been widely used in cola mine field,petroleum field,and geological exploration field.We sincerely welcome our friend both home and abroad to come for business talks.Read More

  • Diamond Core Drill Bits For Mining And Geological Exploration Supplier

    Contact NowDiamond Core Drill Bits For Mining And Geological Exploration SupplierThe advantage of ZuanLong Diamond Core Bits 1. The matrix height is 12mm for K series and 16mm for Series 2. K2/S2, K4/S4, K6/S6 are main choice, K3/S3, K5/S5, K7/S7 can adjust hardness 3. K10,S10 choice is for special formationRead More

  • PDC Drilling Drag Bit/ZuanLong Step Drag Bits/chevron Drag Bit Best Price

    Contact NowPDC Drilling Drag Bit/ZuanLong Step Drag Bits/chevron Drag Bit Best PriceZuanlong supplies a variety of drag bits for many types of projects drilling needs, including 3 wings type bits for soft and medium formations, 4 wings, especially 4 wings chevron type for harder formations. Each of our bits is machined from a forging to exacting standards and then tipped with tungsten carbide. Mining grade tungsten carbide tips are brazed to the bits wing face for heavy duty bits. Then pin threads are CNC manufactured and wings surfaced hardening subsequently.Read More

  • Newest Design Reamer Bit PDC Coal Mine Drilling Tool

    Contact NowNewest Design Reamer Bit PDC Coal Mine Drilling ToolZuanLong PDC hole opener was originally developed for coal mining and it has been proved to be exceptionally cost effective for geotechnical drilling. PDC core bits have extremely fast penetration rates and a very long working life. The cutters are extremely tough and can core formations such as hard...Read More