2.Wt:2.5-75mm 3.Standard: Gb astm bs jis din en...... 4.Grade: Transportation of oil, gas or fluid, construction, electricity, machine building industry, chemical industry, petroleum, traffic. Advantages: A).Our company produce various specification and models and national standards of seamless steel pipe for ship B) using high-quality material and advanced production technology and equipment for processing C). Applicable to a humid climate and the harsh corrosive environment. Major products: seamless steel pipe(especially big size seamless steel pipe), welded steel pipe, elbow, tees, reducers, flanges