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API 5L ASTM A53 SCH40 Black Painted Welded Steel Pipe

API 5L ASTM A53 SCH40 Steel Pipe Brief Information

Product ASTM A53 Black Painted Welded Steel Pipe
Material Carbon Steel
Grade Q195 = S195 / A53 Grade A
Q235 = S235 / A53 Grade B / A500 Grade AQ345 = S355JR / A500 Grade B Grade C
Standard GB/T3091, GB/T13793API 5L/ASTM A53, A500, A36, ASTM A795
Specifications ASTM A53 A500 sch10 – sch80
Surface Painted Black
Ends Plain ends
Beveled ends

SCH40 Steel Pipe Size Chart

SCH40 (Schedule 40) refers to the wall thickness of the pipe.

DN OD SCH40
MM INCH MM (mm)
15 1/2” 21.3 2.77
20 3/4” 26.7 2.87
25 1” 33.4 3.38
32 1-1/4” 42.2 3.56
40 1-1/2” 48.3 3.68
50 2” 60.3 3.91
65 2-1/2” 73 5.16
80 3” 88.9 5.49
90 3-1/2" 101.6 5.74
100 4” 114.3 6.02
125 5” 141.3 6.55
150 6” 168.3 7.11
200 8” 219.1 8.18
250 10” 273.1 9.27
Contact with us freely, if you need other sizes.


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Schedule 40 Welded Steel Pipe Quality Control

1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.
2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Singapore, Philippines, Peru. We own UL /FM, ISO9001/18001, CE certificates.

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