ASTM A312 TP304 316 Heavy Wall Seamless Stainless Steel Tube

ASTM A312 TP304 316 Heavy Wall Seamless Stainless Steel Tube is made of high-quality austenitic stainless steel. It has excellent corrosion resistance, high strength, and durability. It can withstand high pressure and loads. It is commonly used in industry, the chemical industry, shipbuilding, and structural applications.
Outer Diameter: 5mm-420mm (customizable)
Wall Thickness: 0.5mm-55mm (customizable)
Length: Can be customized upon request
Steel Grade:TP XM-19 TP XM-10 TP XM-11 TP XM-15 TPXM-29 304 304L 304H 304LN 309S 309H 310S 316 316L 316LN 317 321 347 348

Products Description

ASTM A312 TP304 316 Heavy Wall Seamless Stainless Steel Tube

Advantages of Heavy Wall Seamless Stainless Steel Tube

Wall Thickness Advantage: The thick-walled design enables these tubes to withstand high internal pressures, making them ideal for use in chemical plants, boilers, and hydraulic systems.
Material Advantage: Grades such as TP316 and TP XM-29 offer excellent corrosion resistance against chloride-induced corrosion, pitting, and rust, making them suitable for marine environments, seawater piping, and chemical processing equipment.
Heat Resistance Advantage: High-temperature grades such as TP XM-15 and TP XM-29 maintain mechanical integrity and corrosion resistance in boilers, superheaters, and high-temperature process piping.

applications of Heavy Wall Seamless Stainless Steel Tube

Oil and gas industry: high-pressure pipelines, chemical injection lines, drilling equipment, and corrosion-resistant piping for offshore platforms and subsea facilities.
Chemical and petrochemical plants: heat exchangers, condensers, reactors, and process piping.
Power generation: boiler tubes, superheaters, and high-temperature steam piping.
Industrial machinery: hydraulic cylinders, heavy machinery piping, and pressure vessels.
Architectural and structural applications: structural supports, decorative columns, and load-bearing frames.

Chemical Composition

Grade	C (%)	Mn (%)	P (%)	S (%)	Si (%)	Cr (%)	Ni (%)	Mo (%)
TP304	0.08	2.00	0.045	0.030	1.00	18–20	8–11	–
TP316	0.08	2.00	0.045	0.030	1.00	16–18	10–14	2–3
TP XM-15	0.10	2.00	0.045	0.030	1.00	15–17	12–14	1–2
TP XM-29	0.10	2.00	0.045	0.030	1.00	17–19	12–15	2–3

Mechanical Properties

Property	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HRB)
TP304	515 min	205 min	40	90
TP316	515 min	205 min	40	95
TP XM-15	520–650	210–350	35–40	95–105
TP XM-29	540–680	220–360	35–40	100–110

Possible Alternative Grades

304L / 316L – Low-carbon versions for improved weldability and reduced sensitization.
321 Stainless Steel – Titanium-stabilized grade for improved intergranular corrosion resistance.
Duplex Stainless Steel – Higher strength and better chloride stress corrosion resistance.
317 / 317L Stainless Steel – For applications with higher chemical corrosion requirements.