Trademark: Shougang Mill Commodity: Low price Seamless steel pipe Short Delivery Time: 25~45 days Packing ... Bending Test, Hardness Test, Blow Test, Impact Test etc), Exterior Size Inspection, Nondestructive Test (Ultrasonic flaw detector, Eddy. current flaw detector ... anti-corrosion oil,galvanized,or painting as customer's request. Size:(outer diameter,wall thickness,length) Outer diameter:21.3mm- ...