Stainless steel seamless pipe is a long steel material with a hollow section and no seams around it. The thicker the wall thickness of the product, the more economical and practical it is. The thinner the wall thickness, the processing cost will increase significantly.The process of this product determines its limited performance.

Generally, seamless steel pipes have low precision: uneven wall thickness, low brightness of the inner and outer surfaces of the pipe, high cost of sizing, and pitting and black spots on the inner and outer surfaces that are difficult to remove; its detection and Shaping must be processed offline. Therefore, it reflects its superiority in terms of high pressure, high strength, and mechanical structural materials.

Available Specification

Product Name	Executive Standard	Dimension	Steel Code / Steel Grade
Seamless Austenitic Stainless Steel Pipes	ASTM A312/A312M, ASME SA312/SA312M	OD: 1/4″~20″WT: SCH5S~SCH80S	TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Austenitic Stainless Steel Tubing for General Service	ASTM A269, ASME SA269	OD: 6.0~50.8mmWT: 0.8~10.0mm	TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Austenitic Alloy-Steel Boiler, Super Heater, and Heat-Exchanger Tubes	ASTM A213/A213M, ASME SA213/SA213M	OD: 6.0~50.8mmWT: 0.8~10.0mm	TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Seamless Duplex Stainless Steel Tubing for General Service	ASTM A789 / A789M	OD: 19.0~60.5mmWT: 1.2~5.0mm	S31803, S32205, S32750
Seamless Duplex Stainless Steel Pipes	ASTM A790 / A790M	OD: 3/4″~10″WT: SCH5S~SCH80S	S31803, S32205, S32750
Seamless Stainless Steel Mechanical Tubing	ASTM A511	OD: 6.0~50.8mmWT: 1.8~10.0mm	MT304, MT304L, MT304H, MT310, MT310S, MT316, MT316L, MT317, MT317L, MT321, MT321H, MT347
Seamless Stainless Steel Tubes for Pressure Purposes	EN 10216, DIN 17456, 17458	OD: 6.0~530.0mmWT: 0.8~34.0mm	1.4301, 1.4307, 1.4541, 1.4401, 1.4404, 1.4571, 1.4878, 1.4432, 1.4462

Chemical Composition of ASTM A213 Stainless Steel Seamless Pipe

Grade	UNSDesignation	Composition
Carbon	Manganese	Phosphorous	Sulfur	Silicon	Chromium	Nickel	Molybdenum
C	S25700	0.02	2.00	0.025	0.010	6.5-8.0	8.0-11.5	22.0-25.0	0.50
TP304	S30400	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	…
TP304L	S30403	0.035D	2.00	0.045	0.030	1.00	18.0-20.0	8.0-12.0	…
TP304H	S30409	0.04–0.10	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	…
C	S30432	0.07–0.13	0.50	0.045	0.030	0.03	17.0-19.0	7.5-10.5	…
TP304N	S30451	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	…
TP304LN	S30453	0.035D	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	…
C	S30615	0.016–0.24	2.00	0.030	0.030	3.2-4.0	17.0-19.5	13.5-16.0	…
C	S30815	0.05–0.10	0.80	0.040	0.030	1.40-2.00	20.0-22.0	10.0-12.0	…
TP316	S31600	0.08	2.00	0.045	0.030	1.00	16.0-18.0	10.0-14.0	2.00–3.00
TP316L	S31603	0.035D	2.00	0.045	0.030	1.00	16.0-18.0	10.0-14.0	2.00–3.00
TP316H	S31609	0.04–0.10	2.00	0.045	0.030	1.00	16.0-18.0	11.0-14.0	2.00–3.00
TP316N	S31651	0.08	2.00	0.045	0.030	1.00	16.0-18.0	10.0-13.0	2.00–3.00
TP316LN	S31653	0.035D	2.00	0.045	0.030	1.00	16.0-18.0	10.0-13.0	2.00–3.00

Chemical Composition of ASTM A312 Stainless Steel Seamless Pipe

Grade	UNSDesignation	Composition
Carbon	Manganese	Phosphorous	Sulfur	Silicon	Chromium	Nickel	Molybdenum
TP304	S30400	0.08	2.00	0.045	0.030	1.00	18.0 – 20.00	8.0-11.0	…
TP304L	S30403	0.035 D	2.00	0.045	0.03	1.00	18.0 – 20.00	8.0-113.0	…
TP304H	S30409	0.04 – 0.10	2.00	0.045	0.03	1.00	18.0 – 20.00	8.0-11.0	…
…	S30415	0.04 – 0.06	0.8	0.045	0.03	1.00 –2.00	18.0 – 19.0	9.0-10.0	…
TP304N	S30451	0.08	2.00	0.045	0.03	1.00	18.0 – 20.00	8.0-18.0	…
TP304LN	S30453	0.035	2.00	0.045	0.03	1.00	18.0 – 20.00	8.0-12.0	…
TP316	S31600	0.08	2.00	0.045	0.03	1.00	16.0-18.0	11.0-14.0E	…
TP316L	S31603	0.035 D	2.00	0.045	0.03	1.00	16.0-18.0	10.0-14.0	…
TP316H	S31609	0.04 – 0.10	2.00	0.045	0.03	1.00	16.0-18.0	10.0-14.0E	…
TP316Ti	S31635	0.08	2.00	0.045	0.03	0.75	16.0-18.0	10.0-14.0	53 (C+N)–0.70
TP316N	S31651	0.08	2.00	0.045	0.03	1.00	16.0-18.0	11.0-14.0E	…
TP316LN	S31635	0.035	2.00	0.045	0.03	1.00	16.0-18.0	11.0-14.0E	…

Mechanical Properties of ASTM A213 Stainless Steel Seamless Pipe

Grade	UNSDesignation	Tensile Strengthmin, ksi [MPa]	Yield Strength,min, ksi [MPa]
TP304	S30400	75[515]	30[205]
TP304L	S30403	70[485]	25[170]
TP304H	S30409	75[515]	30[205]
…	S30432	80[550]	30[205]
TP304N	S30451	80[550]	35[240]
TP304LN	S30453	75[515]	30[205]
TP316	S31600	75[515]	30[205]
TP316L	S31603	70[485]	25[170]
TP316H	S31609	75[515]	30[205]
TP316N	S31651	80[550]	35[240]

Mechanical Properties of ASTM A312 Stainless Steel Seamless Pipe

Grade	UNSDesignation	Tensile Strengthmin, ksi [MPa]	Yield Strength,min, ksi [MPa]
TP304	S30400	75[515]	30[205]
TP304L	S30403	70[485]	25[170]
TP304H	S30409	75[515]	30[205]
. . .	S30415	87[600]	42[290]
TP304N	S30451	80[550]	35[240]
TP304LN	S30453	75[515]	30[205]
TP316	S31600	75[515]	30[205]
TP316L	S31603	70[485]	25[170]
TP316H	S31609	75[515]	30[205]
. . .	S31635	75[515]	30[205]
TP316N	S31651	80[550]	35[240]
TP316LN	S31653	75[515]	30[205]

Product Features

1. Chemical analysis: Conduct chemical analysis on the chemical composition of the material, and the chemical composition complies with the standards.

2. Air pressure and hydraulic pressure test: The pressure-resistant pipes are tested one by one. The specified pressure value is not maintained for no less than 5 seconds and there is no leakage. The conventional supply hydraulic pressure test is 2.45MPa. The air pressure pressure test is P =0.5MPAa.

3. Corrosion test: All industrial corrosion-resistant steel pipes supplied are tested for corrosion resistance in accordance with standards or corrosion methods agreed upon by both parties. There must be no intergranular corrosion tendency.

4. Process performance inspection: flattening test, tensile test, impact test, expansion test, hardness test, metallographic test, bending test, non-destructive testing (including eddy current testing, X-ray testing and ultrasonic testing).

5. Theoretical weight:Cr-Ni austenitic stainless steel W=0.02491S(D-S)Cr-Ni-Mo austenitic stainless steel (kg/m)S-wall thickness (mm)D-Outer diameter (mm)

Jiangsu Hangdong Metal Co., Ltd. is a casting and processing technology enterprise that produces pure copper, brass, bronze and copper-nickel alloy copper-aluminum plate and coil, with advanced production equipment and inspection instruments. It has 5 aluminum production lines and 4 copper production lines to produce all kinds of standard copper plate, copper tube, copper bar, copper strip, copper tube, aluminum plate and coil, and non-standard customization. The company provides 10 million tons of copper materials all year round. The main product standards are: GB/T, GJB, ASTM, JIS and German standard.

Contact us: [email protected]

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Company Name: Jiangsu HangDong Metal Co., Ltd.
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Country: China
Website: https://www.hd-steels.com/