Duplex Stainless Seamless Steel Pipe ASTM A815 S31803

Key Attributes: Corrosion Resistance: The incorporation of chromium creates a protective oxide layer, safeguarding the pipes against corrosion and rust even in challenging environments. Diverse Grades: Stainless seamless pipes are available in a range of grades such as 304, 316, 321, and 347, each tailored to specific applications due to variations in chemical composition and mechanical properties. Wide Applications: These pipes find use across numerous sectors, including oil and gas, chemical processing, food and beverage, pharmaceuticals, automotive, and construction. Their adaptability to different conditions and substances underscores their versatility. Sizes and Finishes: Stainless seamless steel pipes come in various sizes, catering to diverse requirements. The pipes can also feature different surface finishes, from polished to mill finishes, based on application needs. Installation and Maintenance: The seamless design simplifies installation while the pipes' resistance to corrosion reduces maintenance demands, contributing to cost-effectiveness. From facilitating the transport of oil and gas to enabling the safe conveyance of chemicals and maintaining the purity of pharmaceutical products, stainless seamless steel pipes play a pivotal role in shaping industries worldwide. Their combination of strength, durability, and resistance to environmental factors makes them an indispensable asset in modern engineering and infrastructure.

ASTM A312/A312M：304, 304L, 310/S, 310H, 316, 316L, 321, 321H etc...

EN 10216-5: 1.4301, 1.4307, 1.4401, 1.4404, 1.4571, 1.4432, 1.4435, 1.4541, 1.4550 etc...

DIN 17456: 1.4301, 1.4307, 1.4401, 1.4404, 1.4571, 1.4432, 1.4435, 1.4541, 1.4550 etc...

JIS G3459: SUS304TB, SUS304LTB, SUS316TB, SUS316LTB etc...

GB/T 14976: 06Cr19Ni10, 022Cr19Ni10, 06Cr17Ni12Mo2

Austenitic stainless steel: TP304, TP304L, TP304H, TP310S, TP316, TP316L, TP316H, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H, TP347HFG N08904(904L), S30432, S31254, N08367, S30815...
Duplex stainless steel：S31803, S32205, S32750, S32760, S32707, S32906...
Nickel Alloy：N04400, N06600, N06625, N08800, N08810(800H), N08825...
Usage: Petroleum, Chemical, Natural gas, Electric power and Mechanical equipment manufacturing industries.

Raw Material Checking, Chemical Analysis, Mechanical Test, Visual Inspection, Dimension Check, Bend Test, Impact Test, Intergranular Corrosion Test, Non-Destructive Examination（UT, MT, PT) Flaring and Flattening Test, Hardness Test, Pressure Testing, Ferrite Content Test, Metallography Testing, Corrosion Testing, Eddy Current Testing, Salt Spray Testing, Corrosion Resistance Testing, Vibration Test, Pitting Corrosion Test, Painting and Coating Inspection, Documentation Review…..Stainless steel pipes are packaged and shipped with utmost care to ensure their protection during transit. Here is a description of the packaging and shipping process: Packaging: ● Protective Coating: Before packaging, stainless steel pipes are often coated with a layer of protective oil or film to prevent surface corrosion and damage. ● Bundling: Pipes of similar sizes and specifications are carefully bundled together. They are secured using straps, ropes, or plastic bands to prevent movement within the bundle. ● End Caps: Plastic or metal end caps are placed on both ends of the pipes to provide additional protection to the pipe ends and threads. ● Padding and Cushioning: Padding materials such as foam, bubble wrap, or corrugated cardboard are used to provide cushioning and prevent impact damage during transportation. ● Wooden Crates or Cases: In some cases, pipes may be packed in wooden crates or cases to provide extra protection against external forces and handling. Shipping: ● Mode of Transportation: Stainless steel pipes are typically shipped using various modes of transportation such as trucks, ships, or air freight, depending on the destination and urgency. ● Containerization: Pipes may be loaded into shipping containers to ensure safe and organized transit. This also offers protection from weather conditions and external contaminants. ● Labeling and Documentation: Each package is labeled with essential information, including specifications, quantity, handling instructions, and destination details. Shipping documents are prepared for customs clearance and tracking. ● Customs Compliance: For international shipments, all necessary customs documentation is prepared to ensure smooth clearance at the destination. ● Secure Fastening: Within the transportation vehicle or container, pipes are securely fastened to prevent movement and minimize the risk of damage during transit. ● Tracking and Monitoring: Advanced tracking systems may be employed to monitor the location and condition of the shipment in real-time. ● Insurance: Depending on the value of the cargo, shipping insurance may be obtained to cover potential losses or damages during transit. In summary, stainless steel pipes we produced will be packaged with protective measures and shipped using reliable transportation methods to ensure they reach their destination in optimal condition. Proper packaging and shipping procedures contribute to the integrity and quality of the delivered pipes.

Standard	Steel Grades
ASTM A312/A312M: Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes	304, 304L, 310S, 310H, 316, 316L, 321, 321H etc...
ASTM A213: Seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes	TP304, TP304L, TP316, TP316L, TP321.TP347 etc...
ASTM A269: Seamless and welded austenitic stainless steel tubing for general service	TP304, TP304L, TP316, TP316L, TP321.TP347 etc...
ASTM A789: Seamless and welded ferritic/austenitic stainless steel tubing for general service	S31803 (Duplex stainless steel) S32205 (Duplex stainless steel)
ASTM A790: Seamless and welded ferritic/austenitic stainless steel pipe for general corrosive service, high-temperature service, and duplex stainless steel pipes.	S31803 (Duplex stainless steel) S32205 (Duplex stainless steel)
EN 10216-5: European Standard for Seamless Steel Tubes for Pressure Purposes	1.4301, 1.4307, 1.4401, 1.4404, 1.4571, 1.4432, 1.4435, 1.4541, 1.4550 etc...
DIN 17456: German Standard for Seamless Circular Stainless Steel Tube	1.4301, 1.4307, 1.4401, 1.4404, 1.4571, 1.4432, 1.4435, 1.4541, 1.4550 etc...
JIS G3459: Japanese Industrial Standard for Stainless Steel Pipes for Corrosion Resistance	SUS304TB, SUS304LTB, SUS316TB, SUS316LTB etc...
GB/T 14976: Chinese National Standard for Seamless Stainless Steel Pipes for Fluid Transport	06Cr19Ni10, 022Cr19Ni10, 06Cr17Ni12Mo2
Austenitic stainless steel：TP304, TP304L, TP304H, TP310S, TP316, TP316L, TP316H, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H,TP347HFG N08904(904L), S30432, S31254, N08367, S30815... Duplex stainless steel：S31803, S32205, S32750, S32760, S32707, S32906... Nickel Alloy：N04400, N06600, N06625, N08800, N08810(800H), N08825... Usage: Petroleum, Chemical, Natural gas, Electric power and Mechanical equipment manufacturing industries.

NB	Size	OD mm	SCH40S mm	SCH5S mm	SCH10S mm	SCH10 mm	SCH20 mm	SCH40 mm	SCH60 mm	XS/80S mm	SCH80 mm	SCH100 mm	SCH120 mm	SCH140 mm	SCH160 mm	SCHXXS mm
6	1/8”	10.29			1.24			1.73			2.41
8	1/4”	13.72			1.65			2.24			3.02
10	3/8”	17.15			1.65			2.31			3.20
15	1/2”	21.34	2.77	1.65	2.11			2.77		3.73	3.73				4.78	7.47
20	3/4”	26.67	2.87	1.65	2.11			2.87		3.91	3.91				5.56	7.82
25	1”	33.40	3.38	1.65	2.77			3.38		4.55	4.55				6.35	9.09
32	1 1/4”	42.16	3.56	1.65	2.77			3.56		4.85	4.85				6.35	9.70
40	1 1/2”	48.26	3.68	1.65	2.77			3.68		5.08	5.08				7.14	10.15
50	2”	60.33	3.91	1.65	2.77			3.91		5.54	5.54				9.74	11.07
65	2 1/2”	73.03	5.16	2.11	3.05			5.16		7.01	7.01				9.53	14.02
80	3”	88.90	5.49	2.11	3.05			5.49		7.62	7.62				11.13	15.24
90	3 1/2”	101.60	5.74	2.11	3.05			5.74		8.08	8.08
100	4”	114.30	6.02	2.11	3.05			6.02		8.56	8.56		11.12		13.49	17.12
125	5”	141.30	6.55	2.77	3.40			6.55		9.53	9.53		12.70		15.88	19.05
150	6”	168.27	7.11	2.77	3.40			7.11		10.97	10.97		14.27		18.26	21.95
200	8”	219.08	8.18	2.77	3.76		6.35	8.18	10.31	12.70	12.70	15.09	19.26	20.62	23.01	22.23
250	10”	273.05	9.27	3.40	4.19		6.35	9.27	12.70	12.70	15.09	19.26	21.44	25.40	28.58	25.40
300	12”	323.85	9.53	3.96	4.57		6.35	10.31	14.27	12.70	17.48	21.44	25.40	28.58	33.32	25.40
350	14”	355.60	9.53	3.96	4.78	6.35	7.92	11.13	15.09	12.70	19.05	23.83	27.79	31.75	35.71
400	16”	406.40	9.53	4.19	4.78	6.35	7.92	12.70	16.66	12.70	21.44	26.19	30.96	36.53	40.49
450	18”	457.20	9.53	4.19	4.78	6.35	7.92	14.27	19.05	12.70	23.83	29.36	34.93	39.67	45.24
500	20”	508.00	9.53	4.78	5.54	6.35	9.53	15.09	20.62	12.70	26.19	32.54	38.10	44.45	50.01
550	22”	558.80	9.53	4.78	5.54	6.35	9.53		22.23	12.70	28.58	34.93	41.28	47.63	53.98
600	24”	609.60	9.53	5.54	6.35	6.35	9.53	17.48	24.61	12.70	30.96	38.89	46.02	52.37	59.54
650	26”	660.40	9.53			7.92	12.70			12.70
700	28”	711.20	9.53			7.92	12.70			12.70
750	30”	762.00	9.53	6.35	7.92	7.92	12.70			12.70
800	32”	812.80	9.53			7.92	12.70	17.48		12.70
850	34”	863.60	9.53			7.92	12.70	17.48		12.70
900	36”	914.40	9.53			7.92	12.70	19.05		12.70

Hot Rolling (Extruded Seamless Steel Pipe) Process: Round tube billet→heating→perforation→three-roller cross-rolling, continuous rolling or extrusion→tube removal→sizing (or reducing diameter)→cooling→straightening→hydraulic test (Or flaw detection)→mark→storage Cold Drawn (Rolled) Seamless Steel Tube Process: Round tube billet→heating→perforation→heading→annealing→pickling→oiling (copper plating)→multi-pass cold drawing (cold rolling)→billet→heat treatment→straightening→Hydraulic test (flaw detection)→Marking→Storage.Stainless steel seamless pipes are a crucial material widely used across various industries due to their exceptional corrosion resistance, high strength, and ability to withstand high temperatures. Here are some primary applications of stainless steel seamless pipes: Oil and Gas Industry: Stainless steel seamless pipes are commonly employed in oil and gas exploration, transportation, and processing. They are used for well casings, pipelines, and processing equipment due to their corrosion resistance against liquids and gases. Chemical Industry: In chemical processing and manufacturing, stainless steel seamless pipes are used to convey acids, bases, solvents, and other corrosive substances. They contribute to the safety and reliability of pipeline systems. Energy Industry: Stainless steel seamless pipes play a critical role in energy production, including nuclear energy, fuel cells, and renewable energy projects, for pipelines and equipment. Food and Beverage Industry: Thanks to their hygiene and corrosion resistance, stainless steel seamless pipes are widely used in food processing and beverage production, including the conveyance of liquids, gases, and food materials. Pharmaceutical Industry: In pharmaceutical manufacturing and drug production, stainless steel seamless pipes are utilized for conveying and handling pharmaceutical ingredients, meeting hygiene and quality standards. Shipbuilding: Stainless steel seamless pipes are used in shipbuilding for constructing vessel structures, pipeline systems, and seawater treatment equipment, owing to their resistance to marine environment corrosion. Construction and Building Materials: Stainless steel seamless pipes used in construction are employed for water supply pipelines, HVAC systems, and decorative structural components. Automotive Industry: In the automotive sector, stainless steel seamless pipes find application in exhaust systems due to their high-temperature resistance and corrosion resistance. Mining and Metallurgy: In mining and metallurgical fields, stainless steel seamless pipes are used to transport ores, slurries, and chemical solutions. In summary, stainless steel seamless pipes are versatile and offer superior performance, making them suitable for various industries. They play a crucial role in ensuring process safety, enhancing equipment reliability, and extending service life. Different applications require stainless steel seamless pipes with specific specifications and materials to meet their unique requirements.

Stainless seamless steel pipes are a vital component in modern industrial applications, renowned for their exceptional durability, corrosion resistance, and seamless construction. Comprising a unique alloy of iron, chromium, and other elements like nickel and molybdenum, these pipes exhibit unparalleled strength and longevity. The seamless manufacturing process involves extruding solid billets of steel to form hollow tubes without any welded joints. This construction method eliminates potential weak points and enhances structural integrity, making stainless seamless steel pipes highly reliable for various applications.