steel pipesteel pipe: Outer diameter:21.3-219mm Wall thickness:0.4-13mm ... , USE:Petroleum,chemical,power,gas,metallurgy,shipbuilding,constructio,etc.SEAMLESS pipe : ISO 9001CERTIFICATE. BUTT WELDED FITTING: Production acc. to the standard ... /2220 DIN2617/2616/2615Types: Elbows, seamless and welded, LR & SR ,Bend -Equal and reducing Tees,seamless and welded - Concentric and eccentric ...