Standard Specification For Stainless Steel ASTM A403 347 /347H Pipe Bend

Specifications: ASTM A403 & ASME SA403

Dimensions : ASME/ANSI B16.9 / B16.28 and MSS SP-43 / SP-75

Outer Diameter : 114.30 mm – 406.40 mm

Wall Thickness : 8.0 mm / 10.0 mm / 12.0 mm – greater wall thickness at request

Bending Radius(R): R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom

Bending angle (θ): 15°, 30°, 45°, 60°, 90°, 135°, 180

SS 347 / 347H Pipe Bends Manufacturing Standards:

SPECIFIC/ SPECIAL REQUIREMENTS

1. Grain Size requirement

   1. All H grades shall be tested for average grain size by Test Methods ASTM E112.

   2. Grades F 304H, F 309H, F 310H, and F 316H shall have a grain size of ASTM No. 6 or coarser.

   3. Grades F 321H, F 347H shall have a grain size of ASTM No. 7 or coarser.

2. Intergranular corrosion testing

   1. All austenitic stainless steels shall pass intergranular corrosion tests performed in accordance with Practice E of Practices A 262.

   2. For all H grades of austenitic stainless steel (like all H grades of SS309, 310, 316, 316) ASTM 262 Practice C with acceptance criteria of 15 mils/year shall have to be conducted

   3. For the IGC test described above two sets of samples shall be drawn from each solution treatment lot; one set corresponding to highest carbon content and other corresponding to the highest rating/thickness.

3. Pickling and passivation to be carried out after forging.

MATERIAL DESCRIPTION, VISUAL AND DIMENSIONAL REQUIREMENTS

Raw material should be chosen so that the final chemical composition and mechanical properties are not violated as mentioned in the standard.

NDT REQUIREMENTS

1. PMI testing of the fittings to be carried out.

2. Low chloride liquid penetrant testing on bevel edges to be carried-out (In accordance with the recommended practice of E-165)

3. Hardness testing to be carried out on all the austenitic stainless-steel grades and SA-213 material specification (Table-4) can be taken as reference for the acceptable criteria

4. Ultrasonic testing: Fitting shall be ultrasonically tested to determine its soundness in accordance with the practice of A388/A388M (For 10 % of the ordered quantity)

MECHANICAL REQUIREMENTS

Mechanical properties shall be as per Table 5 of SSA-403 specification of ASME Sec. II Part-A.

HEAT TREATMENT REQUIREMENTS

Sub-sequent to the solution annealing required by clause 6.2, Grades 321, 321H, 347, 347H, 348 and 348H shall be subjected to additional stabilization heat treatment at 815 -870°C for a minimum of 2h/inch of thickness and then cooling in the furnace or in air.

Hardness testing to be carried out on all the austenitic stainless-steel grades and acceptable criteria shall be as per table 4 of the SA-213 specifications.

MANUFACTURER’S TEST CERTIFICATE

Manufacturer, with each order of fittings shall submit a test certificate confirming/stating that the fittings have been manufactured and tested in accordance with standard stipulated including the clauses mentioned herein and have duly met the requirements. The Test Certificate shall clearly furnish the following information:

1. P.O. number / Certificate number and date. (Certificates without the P.O. number on it shall not be acceptable.)

2. Product description/ Dimensions/relevant standards.

3. Starting material.

4. Heat number.

5. Chemical and mechanical test results including Tensile Test, hardness testing.

6. PMI testing reports

7. Hardness, UT results.

8. Heat treatment details (type / temperature)

9. Stabilization heat-treatment details for SS321, SS347, SS347H

10. Identification marking as per ASME SSA-403

11. IGC test reports

12. Grain size results for ‘H’ grade materials

13. Third party inspection certificate / release note shall accompany the delivery of every consignment.

ASME SA403 347 / 347H Stainless Steel Buttweld Bend Equivalent Grades

Types Of Grade 347 / 347H Stainless Steel Pipe Bends

ASTM A403 SS WP347 / 347H Short Radius Bend

Chemical Composition of Grade 347 / 347H Stainless Steel Pipe Short Radius Bend

Mechanical Properties of ASTM A403 SS 347 / 347H Pipe Bend

ASTM A403 347 / 347H Stainless Steel Pipe Bends Available Types

ASTM A403 SS 347 / 347H Pipe Bend Pipe Inspection & Test reports

• Mill Test Certificates with all ASTM A403 SS 347 / 347H Pipe Bend

• EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)

• Third Party Inspection for Pipe

• Mechanical Reports

• Chemical Reports

• PMI Test Reports

• Visual Inspection Reports

• Destructive Test Report

• NABL Approved Lab Reports

• Raw Materials Certificate

• Non Destructive Test Reports

• 100% Radiography Test Report

• Fumigation Certificates

• HS Code Commercial Invoice

• Heat Treatment Charts

• Surface roughness measurement

• Form A for Generalized System of Preferences (GSP)

• Laboratory Test Certificate from Govt. Approved Lab

• Moisture testing

Stainless Steel 347 / 347H Pipe Bends Application

ASTM A403 347 / 347H Pipe Bends are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of ASTM A403 347 / 347H Stainless Steel Buttweld Bend through a worldwide network of stock-keeping branches. These ASTM A403 347 / 347H Pipe Bend is use in various industries like :

•  Stainless Steel 347 Pipe Bends uses in Oil and Gas Pipeline

•  ASTM A403 SS 347H Pipe Bend uses in Chemical Industry

•  Grade WP347 Stainless Steel Buttweld Bend uses in Plumbing

•  Stainless Steel ASTM A403 347 Pipe Bends uses in Heating

•  ASTM A403 WP347H Pipe Bends uses in Water Supply Systems

•  ASTM A403 347 Stainless Steel Bends uses in Power Plant

•  SS 347H Pipe Bends uses in Paper & Pulp Industry

•  347 SS Buttweld Pipe Bend uses in General Purpose Applications

•  ASME SA403 SS 347H Pipe Bend uses in Fabrication Industry

•  Stainless Steel WP347 Pipe Bends uses in Food Processing Industry

•  ANSI SS 347H Pipe Bends uses in Structural Pipe

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