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ASTM A312 TP 316L Seamless Stainless Steel Pipe

ASTM A312 TP 316L Seamless Stainless Steel Pipe is a low carbon austenitic stainless steel pipe widely used in industrial fields that require high corrosion resistance and good mechanical properties.

Excellent corrosion resistance: TP 316L stainless steel contains a large amount of chromium and nickel elements, which can effectively resist oxidation and corrosion. At the same time, the addition of molybdenum further improves its resistance to strong corrosive media such as chloride ions.
High temperature strength: In high temperature environments, TP 316L stainless steel can maintain good mechanical properties and stability, is not prone to deformation or failure, and is suitable for applications under high temperature conditions.
Good machinability: The material can be processed into pipes of various shapes and sizes through various molding processes to meet different engineering requirements. At the same time, its welding performance is also very excellent, which is convenient for construction and maintenance.
Aesthetics: The cold-rolled product has good gloss and beautiful appearance.

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ASTM A312 TP 316L Seamless Stainless Steel Pipe Description

ASTM A312 TP 316L Seamless Stainless Steel Pipe is a high-quality, corrosion-resistant pipe material widely used in various industrial fields. ASTM A312 TP 316L stainless steel, which is a low-carbon stainless steel, contains high chromium, nickel and a small amount of molybdenum, making it excellent in corrosion resistance.
The dimensions and tolerances of ASTM A312 TP 316L seamless stainless steel pipes meet the requirements of ASTM standards. Common sizes include:
Outside Diameter: from 1/8 inch to 12 inches
Wall Thickness: Depending on the required pressure level and pipe diameter, the wall thickness ranges from standard thickness to extra thickness
Length: Usually single random length (SRL, 16-25 feet) or double random length (DRL, 35-40 feet), and can also be customized according to customer requirements

ASTM A312 TP 316L Seamless Stainless Steel Pipe Technical

The chemical composition of ASTM A312 TP 316L stainless steel is as follows:
Carbon (C): maximum content is 0.03%
Manganese (Mn): maximum content is 2.00%
Phosphorus (P): maximum content is 0.045%
Sulfur (S): maximum content is 0.030%
Silicon (Si): maximum content is 0.75%
Nickel (Ni): 10.0%-14.0%
Chromium (Cr): 16.0%-18.0%
Molybdenum (Mo): 2.0%-3.0%
The low carbon content (≤0.03%) makes 316L have better resistance to intergranular corrosion after welding.
The mechanical properties of ASTM A312 TP 316L seamless stainless steel pipe are as follows:
Minimum yield strength: 25,000 psi (about 170 MPa)
Minimum tensile strength: 70,000 psi (about 485 MPa)
Elongation: more than 35%
Hardness: Brinell hardness (HBW) up to 217, Rockwell hardness (HRB) up to 95, Vickers hardness (HV) up to 210
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ASTM A312 TP 316L Seamless Stainless Steel Pipe Applications

ASTM A312 TP 316L seamless stainless steel pipes are widely used in the following fields:
Chemical and petrochemical industries: for conveying corrosive chemicals
Oil and gas industries: for offshore platforms and other chloride-containing environments
Food and beverage industries: for processing and conveying food and beverages
Pharmaceutical industries: for fluid conveying in sterile and clean environments
Marine engineering: for equipment resistant to seawater corrosion
Nuclear and power industries: for fluid conveying in high temperature and high pressure environments
Summary

ASTM A312 TP 316L Seamless Stainless Steel Pipe Manufacturing Process and Heat Treatment

ASTM A312 TP 316L seamless stainless steel pipe adopts seamless manufacturing process, manufactured by hot rolling or cold rolling method without welds. This manufacturing process ensures the overall strength and pressure resistance of the steel pipe, suitable for applications in high pressure and corrosive environments.
ASTM A312 TP 316L seamless stainless steel pipe is usually solution treated to ensure the best corrosion resistance and mechanical properties:
Solution treatment: The steel is heated to 1040-1150°C and then cooled rapidly to maintain the austenite structure and improve the toughness and corrosion resistance of the material.

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