Tianjin Shiruida Machinery Import & Export Co., Ltd

N80/P110/J55/K55 for material API 5CT.We take Quality supreme, Technology leading-edge as our business philo

N80/P110/J55/K55 for material API 5CT.We take Quality supreme, Technology leading-edge as our business philo

N80/P110/J55/K55 for material API 5CT. Please feel free to contact us. ***** *****

Spiral drill collar is a kind of products of our company. Spiral grooves make mud circulate freely around the

Non-magnetic drill collar adopts a kind of chrome manganese alloy steel as material, low carbon obtained by co

The collars are made of AISI 4145H forging or finish rolling alloy structural ***** drill collar are trepanned

We always have 5" S135, G105 drill pipe in stock.   If you have any inquiries about the OCT

The drill pipes are conformed to API 5D, API SPEC 7. The material of drill pipe body is up to the 1&3 grou