ASTM A358 CL1 TP316L Stainless Steel Welded Pipe For High Temperature Service

ASTM A358 standard stands for the American Society for Testing and Materials, which develops standards for a wide range of materials and products. A358 specifically addresses electric fusion welded (EFW) stainless steel pipe for corrosive or high-temperature applications.

ASTM A358 CL1 TP316L stainless steel welded pipe is an EFW pipe made from austenitic stainless steel (grade 316L). Its low carbon content enhances weldability and corrosion resistance, making it particularly suitable for chloride environments. CL1 is the designation for Class 1 in the A358 standard. Class 1 covers pipes welded on both sides using a full penetration welding process. These pipes are capable of withstanding high internal pressures. As a Class 1 pipe in accordance with ASTM A358, all welds are welded on both sides using filler metal and undergo comprehensive radiographic inspection.

 

 

ASTM A358 TP316L Welded Pipe Grades
Class 1 - Pipe shall be welded on both sides using filler metal for all weld passes and shall be fully radiographically inspected.
Class 2 - Pipe shall be welded on both sides using filler metal for all weld passes. Radiographic inspection is not required.
Class 3 - Pipe shall be welded on one side using filler metal for all weld passes and shall be fully radiographically inspected.
Class 4 - Same as Class 3, but filler metal may not be added to weld passes exposed on the inside of the pipe.
Class 5 - Pipe shall be welded on both sides using filler metal for all weld passes and shall be spot radiographically inspected.

 

ASTM A358 TP316L EFW Pipes Chemical Composition

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
316	Min	–	–	–	0	–	16.0	2.00	10.0	–
	Max	0.08	2.0	0.75	0.045	0.03	18.0	3.00	14.0	0.10
316L	Min	–	–	–	–	–	16.0	2.00	10.0	–
	Max	0.03	2.0	0.75	0.045	0.03	18.0	3.00	14.0	0.10
316H	Min	0.04	0.04	0	–	–	16.0	2.00	10.0	–
	max	0.10	0.10	0.75	0.045	0.03	18.0	3.00	14.0	–

 

ASTM A358 TP 316L stainless steel welded Pipes Mechanical Properties

Grade	Tensile Str (MPa) min	Yield Str 0.2% Proof (MPa) min	Elong (% in 50mm) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
316	515	205	40	95	217
316L	485	170	40	95	217
316H	515	205	40	95	217

 

ASTM A358 TP 316L round Pipes Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 100°C	At 500°C
316/L/H	8000	193	15.9	16.2	17.5	16.3	21.5	500	740

 

If you have project requirements for 316L stainless steel tubing, please feel free to place an order. GNEE maintains a large inventory of popular products for you to choose from. Available in both hot-rolled and cold-rolled forms, contact our factory for detailed chemical composition and free samples. We offer competitive pricing and excellent service.

 

Specification of ASTM A358 EFW Pipes

Standard Specification	ASTM A358 ASME SA358
Size	½ to 6 inch Nominal Bore
Types	Welded, Seamless, ERW, EFW Supplier and Manufacturer
Wall Thickness	0.1 - 60 mm
Length	Single Random Length 5 to 7 Meter Double Random Length 10 - 12 Meter
Surface Finish	Polished, Bright, Annealing, Cold Finish, Pickling
Schedule Pipe Thickness Range	Schedule 160, Schedule 60, XS, Schedule 120, Schedule 40, STD, Schedule 140, Schedule 20, Schedule 80, Schedule 80, XXS, Schedule 30, Supplier in Mumbai
Standard	ASME, DIN, JIS, ASTM, GB, AISI, AMS, EN, GOST
Manufacturing Shapes	Square, Round, Box Section, Rectangle
Manufacturing Technology	Hot Cold Formed
Technique	Cold Rolled Hot Rolled

 

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Packaged in waterproof paper and steel strapping, these products meet standard export seaworthy packaging requirements and are suitable for various shipping methods. Custom packaging is also available upon request.