Specifications ASTM A53 Seamless steel pipe Sizes: OD 20mm-508mm wall thickness:5mm-30mm tolerance O.D.:+/-1%,WT: +/-12.5%

ASTM 53 Seamless steel  pipe

 diameter: 20mm-508mm

wall thinckness: 20-508mm

cylindrical deviation: within 1mm

Application: For conveying gas, water, and oil in both the oil and natural gas industries

Chemical composition:

%(Max.)	C	Mn	P	S	Cr	Ni	Cu	Mo	V
Grade A	0.25	0.95	0.05	0.045	0.04	0.04	0.04	0.15	0.08
Grade B	0.30	1.20	0.05	0.045	0.04	0.04	0.04	0.15	0.08

Mechanical Properties:

Standard	Yield strength σs (MPa)	Tensile strength σb (MPa)	Elongation (A%)
ASTMA53-A	≥205	≥330	20
ASTMA53-B	≥245	≥410	20

Tolerance:

Standard	Size	Tolerance of diameter	Tolerance of wall thickness
ASTMA53	≤48.3mm	+/-0.4mm	+/-12.5%
	≥60.3	+/-1%

ASTM A53 Br.B seamless steel pipe