7" DTH drill rods, 178mm DTH drill rods

178mm DTH Drill Rods:

Product: DTH drill rods

Size: 7" (178mm)

Joint: 4-1/2" API Reg pin & box

Length choose: 1m, 1.5m, 2m, 3m, 4.5m, 6m, 7m, 8m, 9m, 11m, 12m or based on yours.

Thread Connection: B.S. whitworth, API REG, API IF, API NC, FH, XH.

Steel grade: 40Cr, DZ40, R780, J55, E75, G105.

Steel process: Heat treated.

Produce by: Friction welded.

Rig machine: DTH drilling rigs.

Friction welding DTH drill rods use stable quality seamless steel, using time is more than the electrowelding DTH drill rod, and greatly improved strength after heat treatment.

Our SD drill rods produced by CNC machine, and choose high grade steel material thru heat treatment of the steel tube & thread joint to improve the steel material streagth and insurance the thread wear life.

SD DTH Drill Rods Specifications:

 DTH Drill Rods Picture:

Packaging & Shipping:

Packaging: In wooden case, In carton.

Shipping: Less than 2pcs by express (DHL, UPS, TNT, FedEx, EMS) or by your choose.

                             Less than 5pcs by Air or by your choose.

                             More than 10pcs by Sea or by your choose.

 Payment:

FAQ:

Q: What's your delivery time?

A: Commonly produce need 20 days to produce. Within 3 days if in stock.

Q: What methods of payment are accepted?

A: We agree T/T, L/C, West Union, One touch, Money Gram, Paypal.

Q: What about the shipment?

A: Based on order quantity and the length of drill rods. We can send it to you by Express, by Air, by Sea, and by Train. Or send the goods to your chinese agent.

Q: How to control the quality?

A: We should be checking & testing everyone drill rod before shipment.

Q: Do you agree sample order?

A: Yes, we are welcome your sample order to testing our quality.

Q: Does your drill rod have heat treatment?

A: Yes, the heat treatment for our drill rods and casing pipes.

Q: Does your drill rod have rust prevention?

A: Yes, every one drill rod and casing pipe will be with the rust prevention by paint or anticorrosive oil before shipping. If you need galvanized pipes pls contact us the price.

Q: Do you have after-sale service and warranty service?

A: Any quality or quantity problem once confirmed, we will be compensate you the same. Any question or problem we will be reply you within 24 hours.

Q: 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!!!

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