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.
The joint of the drill rod is made of high grade alloy structure steel. Through high pressure forming process, vacuum hardening and tempering precessing, friction welding process, entirely surface hardening processing.
The screw of joint is made by automatic process equipment, it effectively guarantee the precision of each piece product, the craft of friction welding before screw process, this ensure the best alignment standards of drill pipe connection when drilling longhole, it compares with the similar kinds products, it has high bending strength, large rotary torque, smooth running, etc. characteristics.
It also has higher fatigue strength and longer useful life.
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, Alipay, 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.
