Alloy Steel Pipes & Tubes

Chemical Composition & Mechanical Properties of Alloy Steel Pipes & Tubes

Specification	Type	Grade	C (Max)	Mn	P (Max)	S (Max)	Si	Cr	Mo	V	Ni	Yield Strength (Min) MPa	Tensile Strength (Min) MPa	% Elongation	Hardness (Max)
ASTM A335	Seamless	P1	0.15	0.30-0.80	0.025	0.025	0.1	0.44-0.65	N.A.	N.A.	N.A.	205	415	30	85 HRB
ASTM A335	Seamless	P5	0.15	0.30-0.60	0.025	0.025	0.5	4.00-6.00	0.44-0.65	N.A.	N.A.	205	415	30	85 HRB
ASTM A335	Seamless	P9	0.15	0.30-0.60	0.025	0.025	1	4.00-6.00	0.90-1.10	N.A.	N.A.	205	415	30	85 HRB
ASTM A335	Seamless	P11	0.05-0.15	0.30-0.60	0.025	0.025	1	1.00-1.50	0.44-0.65	N.A.	N.A.	205	415	30	85 HRB
ASTM A335	Seamless	P22	0.05-0.15	0.30-0.60	0.025	0.025	0.5	1.90-2.60	0.87-1.13	N.A.	N.A.	205	415	30	85 HRB
ASTM A213	Seamless	T1	0.15	0.30-0.60	0.025	0.025	0.1	0.44-0.65	N.A.	N.A.	N.A.	205	415	30	85 HRB
ASTM A213	Seamless	T5	0.15	0.30-0.60	0.025	0.025	0.5	4.00-6.00	0.44-0.65	N.A.	N.A.	205	415	30	85 HRB
ASTM A213	Seamless	T9	0.15	0.30-0.60	0.025	0.025	1	4.00-6.00	0.90-1.10	N.A.	N.A.	205	415	30	85 HRB

Category	Details
Standard Pipe Dimensions	Outer Diameter (OD): 1/8" (0.375") to 48" (12.5 cm)
	Wall Thickness (WT): Varies from Schedule 10 to Schedule 160
	Schedules: 5, 10, 20, 40, 80, 160, XXS (Extra Extra Strong), etc.
Pipe Manufacturing Process	Seamless Pipe: Formed from a solid billet, no welding required
	Welded Pipe: Made from welded stainless steel coils
	ERW (Electric Resistance Welded): Uses electric resistance for welding
	Spiral Welded Pipe: Weld spirally wound around the pipe (for large sizes)
Surface Finishes	Mill Finish: Basic finish from manufacturing
	Pickled and Passivated: Removes scale and oxide for better corrosion resistance
	Polished: Mirror or satin finish for aesthetic and sanitary applications
	Brushed: Textured, non-reflective surface for architectural use
Applications	Industries Served: Food & Beverage, Chemical & Petrochemical, Marine & Offshore, Oil & Gas

Spec	Outside Dia.	Pipe Body	Pipe End	Wall Thickness	Weight	Length (Nominal)	Avg (mm)	Minimum	Maximum
ASTM A335	±0.1%	N.A.	+10%, -5%	±10%	+10%	Upto 9m: ±3mm	±3mm	-6mm	+6mm
ASTM A213	±0.15 to ±0.38mm	N.A.	+10%, -5%	±10%	+10%	Upto 6m: ±3mm	±3mm	-6mm	+6mm