HENAN XINGHUA MACHINERY MANUFACTURING CO., LTD

1.127mm Flat drill pipe/ factory supply 2. Grade:E-75, X-95, G-105, X-135 3.OD from 2-3/8'' to 5-1/2'' 4.EU, IU, IE

Specification: OD:60.3mm-139.7mm Thickness:6.45mm--12.7mm Grade:E75, X95, G105, S135 Certificate:API 5DP, Gost

API 7-1 integral heavy weight drill pipe (HWDP) 1. OD: 3", 3 1/2", 4", 4 1/2", 5: 2. Type: integral or friction welding

1.AISI 4145H alloyed steel 2.API Spec-7, SY/T6509 3.size:2-1/2 3 3-1/2 4-1/2 5-1/4 4.phosphate, plate copper, cold worked

Non-magnetic Heavy Weight Drill Pipe 1.Alloy steel, stainless steel, etc 2.Strict quality assurance system 3.Factory

Kellys is driving section of wohole drill stem. Kelly is available with square kelly and hexagonal kelly. kelly are manufactured strictly from API Spe