ASTM A376 TP347H Seamless Stainless Steel Pipe For Petrochemical Industry

 ASTM A376 specification covers seamless austenitic steel pipe for high-temperature central station service. Covered grades include five H-grades and two nitrogen-graded grades. The pipe can be heat-treated or cold-finished with appropriate finishing.

ASTM A376 TP 347/347H seamless stainless steel pipe in various sizes, ranging from 1/2-inch to 30-inch outside diameter. Wall thicknesses include SCH5S, 10S, 40S, and 80S, with average wall thickness available upon request. We offer ASTM A376 347/347H seamless stainless steel pipe manufactured using a cold finishing process, followed by heat treatment, pickling, and passivation. Pipe ends may be beveled or smooth-faced.

 

 

ASTM A376 TP 347/347H Seamless Stainless Steel Pipe

	ASTM A376
	304, 316, 321, 347, 347H
	1/8 Inch To 30 Inch, NPS
	Sch 5, Sch 5S, Sch 10S, Sch 40S, Sch 80S, Sch 160
	high-temperature central-station service

 

ASTM A376 SS 347 stainless steel Seamless Pipe Chemical Composition

	C			N	S		P
SS 347	min.	0.04	9.00	–	–	–	–	–	17.0	2.00
max.	0.10	13.00	1.00	–	0.030	2.00	0.045	20.0	3.00

ASTM A376 TP347H Stainless Steel Pipe Physical Properties

	7.7 – 8.03 g/cm3	0.278 – 0.290 lb/in³

ASTM A376 347H Seamless Pipe Mechanical Properties

		Elongation (% in 50mm) min	Yield Strength 0.2% Proof (MPa) min
SS 347	515	35	205	92	201

 

: Boilers, heat exchangers, and superheater tubes in power plants.

: Refinery furnaces, chemical processing units, and high-temperature piping systems.

: Components requiring high-temperature resistance.

: Heat treatment equipment and furnaces.

 

ASTM A376 pipe is delivered in the heat-treated condition unless the purchase order specifically specifies no final heat treatment. Tensile tests, water pressure tests, non-destructive electrical testing, ultrasonic testing, eddy current testing, tensile tests and flattening tests shall all comply with the specified requirements.

Packaged in bales or laminated wooden crates, wrapped in plastic, and appropriately protected to ensure airworthiness for transport, or as required.
Marking must comply with specifications A376/A376M and include information on whether the pipe is hot-finished or cold-finished, including but not limited to: standard, grade, size, heat number, and batch number.