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  7. ASTM A312 TP316L Stainless Steel Pipe 

ASTM A312 TP316L Stainless Steel Pipe 

ASTM A312 TP316L is the low-carbon variant of 316 stainless steel pipe, specifically designed for superior corrosion resistance in welded applications.

Production Standard:ASTM A312
Material Grades:TP316L / 1.4404
Types:Seamless or Welded(TIG/PLASMA)
Tube OD:1/8″ – 80″, DN6-DN2000, 10.3-2032mm
Wall Thickness:SCH5S – SCH80S
Surface:Annealed & Pickled, Bead Blasted, Brushed Finish
Testing:Hydrostatic Test, Pneumatic Test, Eddy Current Test(ECT), Ultrasonic Test (UT), X-ray Test
Certification:TUV ISO 9001:2015, PED 2014/68/EU, AD 2000-W0.
Mill Test Certificate (MTC):EN10204 3.1
For more technical requirements and dimension specifications, please contact us to obtain support from our Engineering Department.

ASTM A312 stainless steel pipe sizes and dimensions should conform to ANSI B36.19, nominal pipe size (NPS) ranges from NPS 1/8 [10.29 mm] to NPS 80 [2032 mm], Schedule number for wall thickness from Sch 5s to Sch 80s, more  Pipe Schedule Sizes  are specified for special applications, the value stated respectively for a specific size, average wall and minimum wall pipe are available.

Nominal Size (Tube OD)Wall Thickness, SCHEDULE
DNNPS(inch)mm5S10S40SSTD80S
61∕8"10.31.241.731.732.41
81∕4"13.71.652.242.243.02
103∕8"17.21.652.312.313.2
151∕2"21.31.652.112.772.773.73
203∕4"26.71.652.112.872.873.91
251"33.41.652.773.383.384.55
321-1∕4"42.21.652.773.563.564.85
401-1∕2"48.31.652.773.683.685.08
502"60.31.652.773.913.915.54
652-1∕2"732.113.055.165.167.01
803"88.92.113.055.495.497.62
903-1∕2"101.62.113.055.745.748.08
1004"114.32.113.056.026.028.56
1255"141.32.773.46.556.559.53
1506"168.32.773.47.117.1110.97
2008"219.12.773.768.188.1812.7
25010"273.13.44.199.279.2712.7
30012"323.93.964.579.539.5312.7
35014"355.63.964.789.53
40016"406.44.194.789.53
45018"457.24.194.789.53
50020"5084.785.549.53
55022"558.84.785.549.53
60024"609.65.546.359.53
65026"660.49.53
70028"711.29.53
75030"7626.357.929.53
80032"812.817.489.53
85034"863.617.489.53
90036"914.419.059.53
95038"965.2-9.53
100040"1016-9.53
StandardOutside Diameter(mm)Thickness(mm)Length(mm)
ASTM A312≤48.26-0.4unspecified
-12.50%
Definite cut length
+6.40
-0
>48.26~114.300
>114.30-219.080.8
>219.08~457.201.6
>457-660-4
>660-864-5
>864-1219-5.6
EN 10217-7D1±1.50% with ±0.75mm(min)
D2±1.00% with ±0.50mm(min)
D3±1.75% with ±0.30mm(min)
D4±0.50% with ±0.10mm(min)
EN ISO 1127
T1±15.00% with±0.60mm(min)
T2±12. 5% with ±0.40mm(min)
T3±10.00% with±0.20mm(min)
T4±7.50% with ±0.15mm(min)
T5±5.00% with ±0.10mm(min)
EN ISO 1127
<6000 +5.00

6000~12000 +10.00
PropertyTensile StrengthYield StrengthElongationHardness
Value≥485 MPa (70 ksi)≥170 MPa (25 ksi)≥40%≤95 HRB
Comparison to TP316~6% lower~17% lowerHigher ductilitySimilar
ElementCCrNiMoMnN
Composition (%)≤0.03016.0-18.010.0-14.02.00-3.00≤2.00≤0.10
Key BenefitPrevents sensitizationCorrosion resistanceAustenite stabilizationPitting resistanceDeoxidizerStrength enhancement

1, Oil & Gas Industry

Transportation of crude oil, natural gas, and refined products  

Offshore platforms and pipelines (resistant to seawater corrosion)

Downhole tubing and casing in harsh environments  

2, Chemical & Petrochemical Industry

Acid and chemical transport (resistant to corrosive substances)  

Heat exchangers, reactors, and storage tanks  

Highpressure and hightemperature applications  

3, Food & Beverage Industry

Sanitary tubing for milk, beer, juice, and other liquids  

Dairy processing and brewing equipment (easy to clean, nonreactive)  

Conveying systems for food production  

4, Pharmaceutical & Biotechnology

Highpurity piping for drug manufacturing  

Sterile processing and cleanroom applications  

Bioreactors and filtration systems  

5, Water Treatment & Desalination

Seawater desalination plants (resistant to saltwater corrosion)  

Wastewater treatment and distribution systems  

Hydraulic and plumbing systems  

6, Power Generation

Boiler tubes and steam pipelines in thermal power plants  

Nuclear power plant cooling systems  

Exhaust systems and heat recovery units  

7, Automotive & Aerospace

Exhaust systems (e.g., manifolds, mufflers)  

Hydraulic and fuel lines  

Aircraft structural components and jet engine parts  

8, Construction & Architecture

Structural frameworks and handrails  

Underground piping for drainage and HVAC systems  

Decorative applications (e.g., facades, bridges)  

9, Pulp & Paper Industry

Chemical recovery systems  

Bleaching and digesting equipment  

Piping for corrosive pulp processing liquids  

10, Mining & Mineral Processing

Slurry transport pipelines  

Acid leaching systems  

Dewatering and tailings management  

Professional Stainless Steel Tube & Pipe
Manufacturer & Supplier

Yaolong is equipped with state-of-the-art machinery to produce high-quality stainless steel pipes. Our advanced facilities include laser cutting machines for precise and clean cuts, internal polishing machines to ensure a smooth, flawless finish, and bright annealing technology for superior corrosion resistance and a polished appearance. Additionally, our internal levelling machines guarantee uniform pipe dimensions and enhanced structural integrity. With these cutting-edge technologies, Yaolong delivers precision-engineered stainless steel pipes that meet the highest industry standards for durability and performance.

We are a trusted manufacturer of high-quality stainless steel tubes, dedicated to delivering superior products that meet the highest industry standards. To ensure reliability and performance, we employ a comprehensive range of advanced testing methods.

By rigorously applying these tests, Yaolong guarantees stainless steel tubes that excel in safety, durability, and performance for diverse industrial applications.

ISO 9001:2015
(ISO) 9001:2015 certification is a globally recognized quality management standard. It ensures that a company follows systematic processes to consistently deliver products and services that meet customer and regulatory requirements. For Yaolong, this certification demonstrates our commitment to quality control, continuous improvement, and customer satisfaction in stainless steel pipe manufacturing.

PED 2014/68/EU (Pressure Equipment Directive)
The PED 2014/68/EU is a European Union regulation that sets safety standards for the design, manufacturing, and testing of pressure equipment. Compliance ensures that Yaolong’s stainless steel pipes meet strict safety and performance requirements for use in high-pressure applications, such as oil & gas, chemical processing, and power plants.

AD 2000-W0
The AD 2000-W0 is a German pressure vessel standard that provides technical guidelines for materials, design, and manufacturing of pressure equipment. Certification under this standard confirms that Yaolong’s pipes adhere to high safety and engineering specifications, making them suitable for demanding industrial environments.

ISO 9001:2015
ISO 9001:2015
PED 2014/68/EU
PED 2014/68/EU
AD 2000-W0
AD 2000-W0

With years of experience in stainless steel pipe manufacturing, Yaolong ensures not only superior product quality but also professional packaging and container loading services. We use customized packaging solutions, including wooden crates, steel straps, and protective coatings, to prevent damage during transit. Our team meticulously plans container loading to maximize space efficiency while ensuring secure stacking and proper weight distribution.

By adhering to international shipping standards, Yaolong guarantees that your stainless steel pipes arrive safely, undamaged, and on time—every time. Trust our expertise for seamless logistics and worry-free global deliveries.

Why choose us?

Professional Stainless Steel Tube & Pipe Manufacturer & Supplier

NANTONG YAOLONG METAL MANUFACTURING CO., LTD is a modern integrated enterprise specialized in manufacturing stainless steel industrial welded tubes and pipes. Currently, Yaolong factory has 4 production bases in Foshan, Guangdong and Nantong,Jiangsu, its annual production capacity reaches 15,000 tons. Nantong Yaolong is honored with NEW TECHNOLOGY ENTERPRISE.

Yaolong company is attractive by talents of professional and technical personnel, it has imported high technology equipment from USA, Germany, France and Japan, producing industrial pipes Φ16- Φ2000mm, thickness in 0.5-18mm. Yaolong company is applying standard of GB, ASTM,  DIN, JIS and ISO. Now, Yaolong is equipped with sophisticated equipment, including Eddy Current Inspection, Metallographic Examination, Hydrostatic Test, Water Tightness Test, Spectral Analysis, X-ray, Roughness Test, Endoscope, Mechanical Universal Test.

Yaolong is equipped with state-of-the-art machinery to produce high-quality stainless steel pipes. Our advanced facilities include laser cutting machines for precise and clean cuts, internal polishing machines to ensure a smooth, flawless finish, and bright annealing technology for superior corrosion resistance and a polished appearance. Additionally, our internal levelling machines guarantee uniform pipe dimensions and enhanced structural integrity. With these cutting-edge technologies, Yaolong delivers precision-engineered stainless steel pipes that meet the highest industry standards for durability and performance.

We are a trusted manufacturer of high-quality stainless steel tubes, dedicated to delivering superior products that meet the highest industry standards. To ensure reliability and performance, we employ a comprehensive range of advanced testing methods.

By rigorously applying these tests, Yaolong guarantees stainless steel tubes that excel in safety, durability, and performance for diverse industrial applications.

ISO 9001:2015
(ISO) 9001:2015 certification is a globally recognized quality management standard. It ensures that a company follows systematic processes to consistently deliver products and services that meet customer and regulatory requirements. For Yaolong, this certification demonstrates our commitment to quality control, continuous improvement, and customer satisfaction in stainless steel pipe manufacturing.

PED 2014/68/EU (Pressure Equipment Directive)
The PED 2014/68/EU is a European Union regulation that sets safety standards for the design, manufacturing, and testing of pressure equipment. Compliance ensures that Yaolong’s stainless steel pipes meet strict safety and performance requirements for use in high-pressure applications, such as oil & gas, chemical processing, and power plants.

AD 2000-W0
The AD 2000-W0 is a German pressure vessel standard that provides technical guidelines for materials, design, and manufacturing of pressure equipment. Certification under this standard confirms that Yaolong’s pipes adhere to high safety and engineering specifications, making them suitable for demanding industrial environments.

With years of experience in stainless steel pipe manufacturing, Yaolong ensures not only superior product quality but also professional packaging and container loading services. We use customized packaging solutions, including wooden crates, steel straps, and protective coatings, to prevent damage during transit. Our team meticulously plans container loading to maximize space efficiency while ensuring secure stacking and proper weight distribution.

By adhering to international shipping standards, Yaolong guarantees that your stainless steel pipes arrive safely, undamaged, and on time—every time. Trust our expertise for seamless logistics and worry-free global deliveries.

Professional Stainless Steel Tube & Pipe
Manufacturer & Supplier

Yaolong is equipped with state-of-the-art machinery to produce high-quality stainless steel pipes. Our advanced facilities include laser cutting machines for precise and clean cuts, internal polishing machines to ensure a smooth, flawless finish, and bright annealing technology for superior corrosion resistance and a polished appearance. Additionally, our internal levelling machines guarantee uniform pipe dimensions and enhanced structural integrity. With these cutting-edge technologies, Yaolong delivers precision-engineered stainless steel pipes that meet the highest industry standards for durability and performance.

We are a trusted manufacturer of high-quality stainless steel tubes, dedicated to delivering superior products that meet the highest industry standards. To ensure reliability and performance, we employ a comprehensive range of advanced testing methods.

By rigorously applying these tests, Yaolong guarantees stainless steel tubes that excel in safety, durability, and performance for diverse industrial applications.

ISO 9001:2015
(ISO) 9001:2015 certification is a globally recognized quality management standard. It ensures that a company follows systematic processes to consistently deliver products and services that meet customer and regulatory requirements. For Yaolong, this certification demonstrates our commitment to quality control, continuous improvement, and customer satisfaction in stainless steel pipe manufacturing.

PED 2014/68/EU (Pressure Equipment Directive)
The PED 2014/68/EU is a European Union regulation that sets safety standards for the design, manufacturing, and testing of pressure equipment. Compliance ensures that Yaolong’s stainless steel pipes meet strict safety and performance requirements for use in high-pressure applications, such as oil & gas, chemical processing, and power plants.

AD 2000-W0
The AD 2000-W0 is a German pressure vessel standard that provides technical guidelines for materials, design, and manufacturing of pressure equipment. Certification under this standard confirms that Yaolong’s pipes adhere to high safety and engineering specifications, making them suitable for demanding industrial environments.

With years of experience in stainless steel pipe manufacturing, Yaolong ensures not only superior product quality but also professional packaging and container loading services. We use customized packaging solutions, including wooden crates, steel straps, and protective coatings, to prevent damage during transit. Our team meticulously plans container loading to maximize space efficiency while ensuring secure stacking and proper weight distribution.

By adhering to international shipping standards, Yaolong guarantees that your stainless steel pipes arrive safely, undamaged, and on time—every time. Trust our expertise for seamless logistics and worry-free global deliveries.

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