Coupling stock is the seamless pipe used for producing coupling of casing and tubing
Main steel grade
As per API 5CT SPEC; J55、K55、N80Q、L80-1、L80-9Cr、L80-13Cr、T95、C110
Sour Service grade, such as CB80S~CB110SS
API SPEC 5CT 9th
Coupling stock is rolled by Assel mill, with good dimension control, high qualified product ratio, stable mechanical and impact property.