91# flat top coreless drill bits for mining.
Common models: 75, 94, 113, 133, 153mm.
Commonly used drill pipes: 42, 50, 63.5, 73, 76, 89mm.
Mainly used for: grouting holes, wattle discharge holes, slopes, supports, anchor cables, wells.
Applicable strata: red sandstone, mudstone, coal seam, backfill, limestone, dolomite medium intact strata.
91# flat top coreless drill bits for mining.
Speedmade Drilling Equipment Co., Ltd. formerly Qidong Fengsu Drilling Tools Co., Ltd. that reasearch and prodction sales drilling equipment,drilling bits professional manufacture. The company has built a high-performance Diamond core bit, DTH hammer bits, hole opener and PDC bit and drilling tools production line with advanced technology, complete equipment and standardized management. It is a company with import and export rights endorsed by the State Administration of Foreign Trade and Economic Cooperation and the General Administration of Customs. The company adheres to people-oriented, technological innovation, and quality first. The product has won unanimous praise from customers in Canada, Russia, South Africa, and South America.
Q1: What are your main products, and used for?
A: Our products include diamond core bits, PDC drill bits, reaming shells, core barrels, casing, drill rods, SPT equipment, drill rig and other drilling parts. They are mostly used for mineral exploration, geological drilling, geotechnical engineering, building wells drilling and soil sampling.
Q2 : Do you agree sample order?
A:Yes, we are welcome your sample order to testing our quality.
Q3 : Can we select the color of the drill bit?
A:Yes, we have standard rock hardness select index to choose drill bit matrix hardness. If you need, we can make the drill bit color based on yours.
Q4 : How about the payment, Mini. Quantity and delivery methods?
A:1. Payment: T/T, L/C, Western Union, Paypal,
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air transportation, sea and train.
Q5 : Can i trust your company?
A:Our company has been certificated by chinese government, and verified by Alibaba Trade Assurance, 100% refund of the Trade Assurance Amount. Alibaba can guarantee all of your payment, Just order from US!!!
Q6 : How does your company control the quality?
A: 1.Quality first. In order to guarantee high quality , SEEDMADE always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.
2.To Build good after -sale service system, we draw up the Quality Guarantee accordingly to the industrial standards combining field experience.Pls. see the Quality Guarantee.
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