heat exchange tube

1) Product:Seamless steel pipe 2) High quality (ISO 9001, API 5L ) 3) Size: 6mm*1mm(OD*THK) to 219mm*25mm (Length:2-14m) Features: Product: Seamless Carbon Steel Pipes for High-Temperature Service 1) Custom specifications Size: 6mm×1mm(OD×THK) to 219mm×20mm, Length :5.8m, 6m, 12m, 14m or any length as customer required. 2) High quality (ISO 9001. BOILER CERTIFICATION, API 5L ) 3) Many kinds of purpose (pipes for machinery, pipeline, boiler pipes) 4) Very reasonable price 5) Many kinds of shapes:round, horse hoof, oval, hexagonal, rectangular, and square 6) Many kinds of standards: ASTM A106 GRA/B/C, ASTM A53 GRB, ASTM A192, DIN17175 st35.8, DIN1629 ST52, ASTM A210, ASTM A179, API 5L GRB. 7) Inner packing:caps at both ends,10 steel strips on every bundle. Outer packing:PE wrapping outside 8)marking:as customers required,size standard and heat number 9)surface:oiled or black painted in order to prevent rust