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API 7-1 4145&Mgbochi Na-abụghị Mag
A na-arụpụta Drill Collar site na AISI 4145H gbanyụọ na nchara dị ọkụ ma na-agwọkwa okpomọkụ n'ogologo ya niile maka ịdịte aka na otu. A na-eme ule metallrgical siri ike n'otu nkọwa iji hụ na ọgwụgwọ okpomọkụ na-emepụta ihe siri ike na-agbanwe agbanwe na nke kachasị site na omimi nke mmanya ahụ.
Landrill na-ebunye olu olu n'ụkpụrụ wee gbagharịa site na 3-1/8" OD ruo 14" OD dịka nkọwa API, NS-1 ma ọ bụ DS-1 siri dị.
Ime ụlọ 703 Building B, Greenland center, Hi-tech development zone Xi'an, China
86-13609153141
