ASTM A179 seamless steel pipe manufacturing process should be cold and stretch. Product analysis and thermal engineering are performed on steel materials that should meet the chemical composition of the two required carbon, manganese, phosphorus and sulfur. "Steel materials should also undergo flattening hardness test, flaring test, flange test and static test.
specification:
Time: Two Diameter 3mm 76.2
Two wall thickness 1.2 mm (12):
Length: 6 meters above
chemical composition:
C: 0.06-0.18
Manganese: 0.27-0.63
P: ≤0.035
S: ≤0.035
Si: ≤0.25
