ASTM A268, A270 Welded Pipes Ferritic Stainless Steel for Metal Products

• Customization: Available
• Application: Automotive Industry, Chemical Industry, Oil and Gas Industry, Building Material
• Certification: CE, ISO9001
• Model NO.: ASTM A268, A270 Welded Ferritic SS Pipes
• Length: Max 50m
• Material: A270
• Outer Diameter: 3.18-810mm
• Type: Welded Pipe
• Wall Thickness: 0.2-40mm
• Steel Grade: A270/A262/A932
• Technique: Hot Rolled/Cold Drawn
• Shape: Round/Customized
• Process: Polished/Solution Treatment
• Condition: Hot Finished/Cold Finished
• End: Plain End/Bevel End
• Usage: Heat Transfer
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Customized
• Thickness: 1-150mm
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Size: 1/4"-4"
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 1000000 Kgs/Year

Product Description

Product Description

Standard	ASTM A268	ASTM A270
Size Range	Outside diameter: 1/8 inch - 5 inches Wall thickness: Varies, with a standard tolerance of ±10% of the specified wall thickness, and the minimum wall thickness should not be less than 87.5% of the specified nominal wall thickness.	Outside diameter: 6 mm - 1020 mm Wall thickness: 0.08 mm - 20 mm
Material Grades	Ferritic and martensitic stainless steels such as TP409, TP410, UNS S41500, TP439.	Stainless steels including 304, 304L, 316L, 316, 310S, 321, 2205, etc.
Production Process	Manufactured by welding processes suitable for the specific materials.	Cold - formed from stainless steel strips or plates, using welding methods like TIG welding, high - frequency welding, and straight - seam welding.

ASTM A268 Welded Pipes

• Size Range
  • Outside Diameter: Ranges from 1/8 inch to 5 inches.
  • Wall Thickness: Varies according to application requirements, with a standard tolerance of ±10% of the specified wall thickness. The minimum wall thickness should not be less than 87.5% of the specified nominal wall thickness.
• Mechanical Properties
  • Tensile Strength: Minimum 380 MPa (55 ksi).
  • Yield Strength: Minimum 205 MPa (30 ksi).
  • Elongation: Minimum 20% in 2 inches.
• Chemical Composition: The chemical composition of ASTM A268 stainless steel tubes varies depending on the grade. For example, in TP409, the maximum carbon content is 0.08%, the maximum manganese content is 1.00%, the maximum phosphorus content is 0.040%, the maximum sulfur content is 0.020%, the maximum silicon content is 1.00%, and the chromium content is 10.5 - 11.7%.

ASTM A270 Welded Pipes

• Size Range
  • Outside Diameter: Ranges from 6 mm to 1020 mm.
  • Wall Thickness: Ranges from 0.08 mm to 20 mm.
• Production Process: Cold - formed from stainless steel strips or plates, using welding methods such as TIG welding, high - frequency welding, and straight - seam welding.
• Surface Finis: Options include mill finish, annealed surface, bright finish, fine - polished surface, and brushed surface.
• Material Grades: Include 304, 304L, 316L, 316, 310S, 321, 2205, etc.
• Intended Use: Intended for use in the dairy and food industry and having special surface finishes. It can also be used in pharmaceutical applications upon request.

ASTM A270 specification covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/austenitic stainless steel sanitary tubing intended for use in the dairy and food industry and having special surface finishes. Pharmaceutical quality may be requested, as a supplementary requirement.

 

TP304 austenitic stainless steel sanitary tubing

2205 duplex stainless steel sanitary tubing

TP316L austenitic stainless steel sanitary tubing

UNS S31254 Pheavily cold worked sanitary tube

UNS S32750 seamless steel sanitary tube

UNS N08926 stainless steel sanitary tube

UNS N08367 steel tube

UNS S31803 welded steel tube

 

Standard: ASTM A270/A270M

Grade: TP304, TP304L, TP316, TP316L, S31254, N08926, N08367, S31803, S32205, S32750, S32003

Process: Seamless, Welded, Heavily Cold Worked Welded

Outside Diameter: 12.7 - 304.8mm

Wall Thickness: 1.5-3.4mm

Length:1000mm to 12000m


 

Manufacture

1. The tubes shall be manufactured by one of the following processes:

1.1 Seamless (SML) tubes shall be made by a process that does not involve welding at any stage.

1.2 Welded (WLD) tubes shall be made using an automated welding process with no addition of filler metal during the welding process.

1.3 Heavily cold worked (HCW) tubes shall be made by applying cold working of not less than 35 % reduction of the thickness of both walls and weld to a welded tube prior to the final anneal. No filler shall be used in making the weld. Prior to cold working, the weld shall be 100 % radiographically inspected in accordance with the requirements of ASME Boiler and Pressure Vessel Code Section VIII, Division 1, latest revision, Paragraph UW 51.

2. At the manufacturer's option, the tubing may be furnished either hot finished or cold finished.


 

Heat Treatment

1.1 All material shall be furnished in heat-treated condition. The heat treatment procedure, except for S31803, S32003, S32205, S32750, N08926 and N08367, shall consist of heating the material to a minimum temperature of 1900 °F [1040 °C] and quenching in water or rapid cooling by other means.

2.2 N08926 shall be heat-treated to a minimum temperature of 2010 °F [1100 °C] followed by quenching in water or rapidly cooling by other means. UNS N08367 should be solution annealed from 2025 °F [1110 °C] minimum followed by rapid quenching.

3.3 S31803 and S32205 shall be heat-treated in a temperature range of 1870 °F [1020 °C] to 2010 °F [1100 °C] followed by quenching in water or rapidly cooling by other means.

4.4 S32750 shall be heat-treated in a temperature range of 1880 °F [1025 °C] to 2060 °F [1125 °C] followed by quenching in water or rapidly cooling by other means.

4.5 S32003 shall be heat-treated in a temperature range of 1850 °F [1010 °C] to 2010 °F [1100 °C]

The corrosion resistance properties of the Stainless Steel Grade 410 Round Tubing is lower in comparison to austenitic stainless steel grades. This being said, martensitic grades such as SS 410 Seamless Tubes are taken into consideration for those applications where good hardness property is a primary requirement. Since the Sa-268 Tp 410 Material has magnetic properties and is able to retain this property even when they are in an annealed or heat treated condition. Hence ASTM A268 Tp 410 could work well in applications that require magnetism. SA 268 410 SS Tubing in continuous service resists oxidation up to 1292°F and in intermittent service, the A 268 Tp 410 Welded Tubes can be used up to 1500°F. To sum up, the main characteristics of 410 Stainless Steel Tubing includes high tensile strength along with low fracture resistance and low ductility as well.

Manufacturing Type   
Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded 

Delivery Condition      
Annealed and Pickled (AP), Polished, Bright Annealed (BA), Cold Drawn, MF 

Surface Finish
BA, 2B, No.4, No.1, No.3, No.8, 8K, HL, 2D, 1D, Mirror Polished, 180G, 320G, 400G Satin/ Hairline, 400G, 500G, 600G or 800G Mirror finish ASME SA213 TP321 Tubing or Custom Finish as per customer's specification 
 
Standard                
SUS, JIS, AISI, ASTM, GB, DIN, EN 

Relevant Standard
ASTM A213, ASTM A312, ASTM A269, ASTM A778, ASTM A554, ASTM A249, ASTM A269, ASTM A270, ASTM A789, DIN 17456, DIN17457, DIN 17459, JIS G3459, JIS G3463, GOST9941, EN10216, BS3605, GB13296