Material Acc of Pipe Fittings

This discussion is part of Material Acceptance - Steel Material for describe additional requirements of ELBOW, REDUCER, TEE, CAP

a) Ordering Information
Information items to be considered in the purchase order are not limited to the following:
i) Specification designation (the year date should be included0.
ii) Quantity
iii) Size and pressure class or dimensions (standard or special).
iv) Seamless or welded
v) Supplementary requirements.
vi) Certification

b) Marking
i) Each fitting shall have the prescribed information stamped or otherwise suitable marked in accordance with relevant specification.

ii) Identification marks consisting of the manufacturer’s symbol or name, schedule number or nominal wall thickness designation, size, fitting designation, and the heat number.

c) Surface Quality
Surface discontinuities shall refer to relevant material specification.

d) In the case where there are surface imperfections, the manufacturer may remove or repair the defect by grinding, machining and welding.

d.1. Repair by grinding or machining
The wall thickness at the point of grinding, or at imperfections shall not be less than the minimum specified or required wall thickness.

d.2. Repair by Welding
- Discontinuities shall be completely removed before welding.
- All welds shall be made by welders, welding operators, and welding procedure qualified under the provisions of ASME Section IX and heat treated after welding in accordance with relevant specification.
- Defects shall be completely removed by chipping or grinding to sound metal as verify by magnetic particle inspection prior to welding.
- After repair welding, the area welded shall be ground smooth to the original contour and shall be completely free of defect as verified by magnetic particle or liquid penetrant inspection.