ASTM A778

ASTM A778 welded stainless steel pipe is intended for applications where corrosion resistance and dimensional consistency are required but where the piping specification does not require the pressure-service provisions of ASTM A312. The purchase specification should identify the grade, outside diameter, wall thickness, length, welding condition, finish, testing, and required documentation.

Before selecting ASTM A778, confirm the design pressure, temperature, corrosion conditions, fabrication method, and applicable piping code with the project engineer. For pressure or elevated-temperature service, compare ASTM A312 pipe and ASTM A358 pipe. Review the complete industrial stainless steel pipe range or send your technical requirements for quotation.

ANSI/ASME B36.19 DIMENSION

Nominal SizeODWall Thickness, SCHEDULE
NPSDNmm5S10S10203040SSTD4080SXS80100120140160XXS
1∕8"610.31.241.731.731.732.412.412.41
1∕4"813.71.652.242.242.243.023.023.02
3∕8"1017.21.652.312.312313.23.23.2
1∕2"1521.31.652.112.772.772.773.733.733.734.787.47
3∕4"2026.71.652.112.872.872.873.913.913.915.567.82
1"2533.41.652.773.383.383.384.554.554.556.359.09
1-1∕4"3242.21.652.773.563.563,564.854.854.856.359.7
1-1∕2"4048.31.652.773.683.683.685.085.085.087.1410.15
2"5060.31.652.773.913.913.915.545.545.548.7411.07
2-1∕2"65732.113.055.165.165.167.017.017.019.5314.02
3"8088.92.113.055.495.495.497.627.627.6211.1315.24
3-1∕2"90101.62.113.055.745.745.748.088.088.08
4"100114.32.113.056.026.026.028.568.568.5411.1313.4917.12
5"125141.32.773.46.556.556.559.539,539.5312.715.8819.05
6"150168.32.773.47.117.117.1110.9710.9710.9714.2718.2621.95
8"200219.12.773.766.357.048.188.188.1812.712.712.715.0918.2620.6223.0122.23
10"250273.13.44.196.357.89.279.279.2712.712.715.0918.2621.4425.428.5825.4
12"300323.93.964.576.358.389.539.5310.3112.712.717.4821.4425.428.5833.3225.4
14"350355.63.964.786.357.929.539.5311.1312.719.0523.8327.7931.7535.71
16"400406.44.194.786.357.929.539.5312.712.721.4426.1930.9536.5340.49
18"450457.24.194.786.357.9211.139.5314.2712.723.8329.3634.9339,6745.24
20"5005084.785.546.359.5312.79.5315.0912.726.1932.5438.144.4550.01
22"550558.84.785.546.359.5312.79.5312.728.5834.9341.2847.6353.98
24"600609.65.546.356.359.5314.279.5317.4812.730.9638.8946.0252.3759.54
26"650660.47.9212.79.5312.7
28"700711.27.9212.715.889.5312.7
30"7507626.357.927.9212.715.889.5312.7
32"800812.87.9212.715.8817.489.5317.4812.7
34"850863.67.9212.715.8817.489.5317.4812.7
36"900914.47.9212.715.8819.059.5319.0512.7
38"950965.2-9.5312.7
40"10001016-9.5312.7
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