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Home > Metallurgy, Mineral & Energy > Steel & Products > Steel Pipe & Tube > Construction Projects Manufacturers Spot 304 Industrial Round Pipe 316 Large Diameter Stainless Steel Pipe

Construction Projects Manufacturers Spot 304 Industrial Round Pipe 316 Large Diameter Stainless Steel Pipe

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Construction Projects Manufacturers Spot 304 Industrial Round Pipe 316 Large Diameter Stainless Steel Pipe photo-4

Construction Projects Manufacturers Spot 304 Industrial Round Pipe 316 Large Diameter Stainless Steel Pipe photo-5

US$ 800 - 1100 MOQ: 1 Ton

Key Specifications

Get Latest Price

Type:

Seamless

Surface Treatment:

Polished

Usage:

Pipeline Transport, Boiler Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Special Purpose

Contact Supplier Request Quote Chat Now

Zhongzheng Stainless Steel Co., Ltd.

2Yrs

Payment & Shipping

Payment Methods:

Port of Shipment:

NINGBO/SHANGHAI/TIANJIN/XIAMEN

Delivery Detail:

8 days

Product Details
Company Profile
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Type Seamless

Surface Treatment Polished

Usage Pipeline Transport, Boiler Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Special Purpose

Material Alloy Steel

Section Shape Round

Delivery Time 8-14 days

Model Number 304 316 310 904 2205 2507

Processing Service Bending, Welding, Decoiling, Punching, C

Specification 0D 3in under

1. Grades in ASTM A790 Standard

Grade	Chemical Composition (wt%)	Mechanical Properties	Typical Applications
S31803	Cr: 21.0-23.0, Ni: 4.5-6.5, Mo: 2.5-3.5, N: 0.08-0.20, Fe balance	Yield Strength: ≥450 MPa Tensile Strength: 620-820 MPa Elongation: ≥25%	General corrosion resistance in oil/gas pipelines, chemical processing, and water treatment.
S32205	Cr: 22.0-23.0, Ni: 4.5-6.5, Mo: 3.0-3.5, N: 0.14-0.20, Fe balance	Yield Strength: ≥450 MPa Tensile Strength: 650-850 MPa Elongation: ≥25%	Offshore platforms, high-pressure chemical reactors, and chloride-rich environments.
S32750	Cr: 24.0-26.0, Ni: 6.0-8.0, Mo: 3.0-5.0, N: 0.24-0.32, Fe balance, minor Cu	Yield Strength: ≥550 MPa Tensile Strength: 750-950 MPa Elongation: ≥25%	Extreme conditions like deep-sea oil exploration, highly corrosive acids, and high-pressure systems.
S32760	Cr: 24.0-26.0, Ni: 6.0-8.0, Mo: 3.0-4.0, N: 0.20-0.30, Fe balance, Cu: 0.5-1.0, W: 0.5-1.0	Yield Strength: ≥550 MPa Tensile Strength: 750-950 MPa Elongation: ≥25%	Seawater desalination, marine engineering, and applications requiring resistance to crevice corrosion.

2. Explanation of Grades and Standard
ASTM A790 Standard Overview

The ASTM A790 standard specifies requirements for welded and seamless ferritic-austenitic (duplex) stainless steel pipes designed for general corrosive service. It emphasizes resistance to stress corrosion cracking (SCC) and sets strict guidelines for manufacturing processes, chemical composition, and mechanical testing. Key tests include tension, flattening, hydrostatic, and non-destructive examinations to ensure dimensional accuracy and material integrity.

Grade-Specific AnalysisS31803 (2205 Duplex)

Composition & Properties: This grade balances chromium (Cr) for passive film formation, nickel (Ni) for austenite stability, and molybdenum (Mo) with nitrogen (N) to enhance pitting resistance. Its moderate alloy content provides a cost-effective solution for moderate corrosion environments.
Applications: Widely used in onshore oil/gas pipelines, chemical plants handling mild acids, and water treatment facilities where a balance of strength and corrosion resistance is needed.

S32205 (Upgraded 2205 Duplex)

Composition & Properties: Slightly higher Cr and N content than S31803 improve resistance to localized corrosion (pitting/crevice) in chloride-rich media. Tighter composition control ensures superior phase balance and mechanical consistency.
Applications: Offshore risers, flowlines, and high-pressure chemical reactors where exposure to seawater or aggressive process fluids demands enhanced durability.

S32750 (2507 Super Duplex)

Composition & Properties: High Cr, Ni, Mo, and N levels create a robust microstructure with exceptional strength and corrosion resistance. The elevated alloy content makes it highly resistant to SCC and pitting in extreme chloride environments.
Applications: Deep-sea oil/gas extraction, chemical plants processing concentrated sulfuric/hydrochloric acids, and high-temperature/high-pressure systems where failure risks are critical.

S32760 (Zeron 100 Super Duplex)

Composition & Properties: Incorporates copper (Cu) and tungsten (W) to further boost resistance to sulfide stress cracking and erosion-corrosion. These additions enhance performance in complex environments with high salinity and abrasive media.
Applications: Seawater intake systems in desalination plants, offshore platforms with high-mud content, and marine structures exposed to harsh tidal zones.

Key Advantages of Duplex Grades

High Strength: Yield strength 2-3 times higher than conventional austenitic stainless steels (e.g., 304/316), reducing wall thickness and weight for cost-efficient designs.
Corrosion Resistance: Superior to single-phase steels in resisting pitting, crevice corrosion, and SCC, especially in chloride, sulfur, and acidic environments.
Thermal Stability: Operates effectively from cryogenic temperatures (≥-50°C) up to 300-350°C, with controlled heat treatment to prevent intermetallic phase precipitation.

3. Application Considerations

Environment Severity: Select grades based on chloride concentration, temperature, and mechanical loads. For example, S31803 for mild conditions, S32750 for extreme severity.
Manufacturing Processes: Welding requires careful control to maintain phase balance; post-weld heat treatment (PWHT) may be necessary for critical applications to avoid sensitization.
Standards Compliance: Ensure compliance with ASTM A790 testing protocols, including chemical analysis, impact testing, and non-destructive evaluation, to meet industry requirements (e.g., API, ASME).

WORKSHOP

Description Name: ASTM A213 seamless stainless tubes, ASTM A213 stainless pipes, A312 seamless stainless tubes, TP304/TP304L/TP304H stainless tubes, TP309S/TP309H stainless tubes, TP310S/TP310H stainless tubes, TP316/TP316L stainless tubes. TP321/TP321H stainless tubes, TP347/TP347H stainless tubes, seamless stainless tubes, stainless tubes

Size:1/8” to 24” (10.3mm to 610mm)

Schedules:

10s, 20, 40s, 40, 60, 80s, 80, 100, 120, 140, 160, XXH

Wall Thickness: 1mm to 60mm

Grade	Specification
Stainless 304/304L, 304/304H	ASTM A213/SA213
Stainless 309S	ASTM A213/SA213
Stainless 310S	ASTM A213/SA213
Stainless 316/316L, 316/316H	ASTM A213/SA213
Stainless 317/317L	ASTM A213/SA213
Stainless 321/321H	ASTM A213/SA213
Stainless 347/347H	ASTM A213/SA213

Shape: Round

Length: Single random length/ Double random length or as customer’s actual request

Max length 25000mm

Referenced Documents:

ASTM Referenced Standards

A 262 Practices for Detecting Susceptibility to Intergranu- lar Attack in Austenitic Stainless Steels

A 941 Terminology Relating to Steel, Stainless Steel, Re- lated Alloys, and Ferroalloys

A 1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stain- less Steel Tubes

E 112 Test Methods for Determining Average Grain Size

Chemical Composition:

Grade	UNS Design	Composition, %
Grade	UNS Design	C	Mn	P	S	Si	Cr	Ni	Mb	Ti	Nb	N	Cu	Ce	B	Al
TP304	S30400	0.08	2	0.045	0.03	1	18.0–20	8.0–11	. . .	. . .	. . .	. . .	. . .	. . .
TP304L	S30403	0.035	2	0.045	0.03	1	18.0–20	8.0–13	. . .	. . .	. . .	. . .	. . .	. . .
TP304H	S30409	0.04 – 0.1	2	0.045	0.03	1	18.0–20	8.0–11	. . .	. . .	. . .	. . .	. . .	. . .
TP310S	S31008	0.08	2	0.045	0.03	1	24.0- 26	19.0- 22	0.8	. . .	. . .	. . .	. . .	. . .
TP310H	S31009	0.04 – 0.1	2	0.045	0.03	1	24.0–26	19.0–22	. . .	. . .	. . .	. . .		. . .
TP310H	S31035	0.04 – 0.1	0.6	0.025	0.015	0.4	21.5–23.5	23.5–26.5	. . .	. . .	0.40- 0.6	0.20- 0.3	2.5- 3.5	. . .	0.002- 0.008
TP316	S31600	0.08	2	0.045	0.03	1	16.0–18	10.0–14	2.00–3	. . .	. . .	. . .	. . .	. . .
TP316L	S31603	0.035	2	0.045	0.03	1	16.0–18	10.0–14	2.00–3	. . .	. . .	. . .	. . .	. . .
TP316H	S31609	0.04 – 0.1	2	0.045	0.03	1	16.0–18	10.0–14	2.00–3	. . .	. . .	. . .	. . .	. . .
TP317	S31700	0.08	2	0.045	0.03	1	18.0–20	11.0–15	3.0–4	. . .	. . .	. . .	. . .	. . .
TP317L	S31703	0.035	2	0.045	0.03	1	18.0–20	11.0–15	3.0–4	. . .	. . .	. . .	. . .	. . .
TP321	S32100	0.08	2	0.045	0.03	1	17.0–19	9.0–12	. . .	Ti 5 × (C+N) min, 0.70 max	. . .	0.1	. . .	. . .
TP321H	S32109	0.04 – 0.1	2	0.045	0.03	1	17.0–19	9.0–12	. . .	4(C+N) min; 0.70 max	. . .	0.1	. . .	. . .
TP321H	S32654	0.02	2.0-4	0.03	0.005	0.5	24.0–25	21.0–23	7.0-8	. . .	. . .	0.45- 0.55	0.30-0.6	. . .
TP321H	S33228	0.04 – 0.08	1	0.02	0.015	0.3	26.0–28	31.0–33	. . .	. . .	0.60- 1	. . .	. . .	0.05 – 0.1		0.025
TP321H	S34565	0.03	5.0-7	0.03	0.01	1	23.0–25	16.0–18	4.0-5	. . .	0.1	0.40- 0.6	. . .	. . .
TP347	S34700	0.08	2	0.045	0.03	1	17.0–19	9.0–13	. . .	. . .	See Spec	. . .	. . .	. . .
TP347H	S34709	0.04 – 0.1	2	0.045	0.03	1	17.0–19	9.0–13	. . .	. . .	See Spec	. . .	. . .	. . .
TP348	S34800	0.08	2	0.045	0.030	1	17.0–19	9.0–13		. . .	. . .	. . .	. . .	. . .	. . .	Co 0.20, Ta 0.10
TP348H	S34809	0.04-0.10	2	0.045	0.030	1	17.0–19.0	9.0–13	. . .	. . .	. . .	. . .	. . .	. . .	. . .	Co 0.20, Ta 0.10
TP444	S44400	0.03	1.0	0.040	0.030	1	17.5–19.5	. . .	1.75-2.50	0.035	. . .	. . .	. . .	. . .	. . .	. . .

Heat Treatment Requirements

Grade	UNS Designation	Heat Treat Type	Austenitizing/ Solutioning Temperature, min or range °F [°C]	Cooling Media	ASTM Grain Size No. B
TP304	S30400	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP304L	S30403	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP304H	S30409	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP309S	S30908	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP309H	S30909	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP310S	S31008	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP310H	S31009	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP316	S31600	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP316L	S31603	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP316H	S31609	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP317	S31700	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP317L	S31703	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP321	S32100	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP321H	S32109	Solution treatment	cold worked:2000[1090] hot rolled: 1925 [1050]H	water or another rapid cool	7
TP347	S34700	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP347H	S34709	Solution treatment	cold worked:2000[1100] hot rolled: 1925 [1050]H	water or another rapid cool	7
TP444	S44400	subcritical anneal	. . .	. . .	. . .

Tensile Requirements

Grade	UNS	Tensile Strength, Min ksi [MPa]	Yield strength, min ksi [MPa]	Elongation in 2 in. or 50 mm, min, %A, B	Hardness, Max
Grade	Designation	Tensile Strength, Min ksi [MPa]	Yield strength, min ksi [MPa]	Elongation in 2 in. or 50 mm, min, %A, B	Brinell/Vickers	Rockwell
TP304	S30400	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP304L	S30403	70 [485]	25 [170]	35	192HBW/200Hv	90HB
TP304H	S30409	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP304N	S30415	80 [550]	35 [240]	35	192HBW/200Hv	90HB
TP310S	S31008	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP310H	S31009	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP316	S31600	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP316L	S31603	70 [485]	25 [170]	35	192HBW/200Hv	90HB
TP316H	S31609	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP316Ti	S31635	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP317	S31700	75 [515]	30 [205]	34	192HBW/200Hv	90HB
TP317L	S31703	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP321	S32100	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP321H	S32109	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP347	S34700	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP347H	S34709	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP444	S44400	60 [415]	40 [275]	20	217 HBW/230HV	96HB

Flattening Test

One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.

Flaring Test

One flaring test shall be made on speci- mens from each end of one finished tube, not the one used for the flattening test, from each lot.

Hydrostatic or Nondestructive Testing

Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test, the type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

Markings

Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer’s private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.

Product Tags: Austenitic alloy steel pipe , ASTM A213 , manufactured in China

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Mr. Laijing Bu

2Yrs

Zhongzheng Stainless Steel Co., Ltd.

Tianjin, China

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Zhongzheng Stainless Steel Co., Ltd.

2Yrs

Main Markets

North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, Domestic Market

Location

Tianjin, China

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