ASTM A135 ERW steel pipe

Category Fire fighting pipe Tag Welded steel pipe

Certificate: FM Approved
Standard: ASTM A135 Grade B / NFPA 13 / NFPA 14
Length: 6m / 5.8m / 11.8m / 12m / 20ft, etc.
End: Plain: square cut / Beveled: 37.5° angle per ASME B16.25 / Roll-grooved: per AWWA C606 / Threaded (NPT): per ASME B1.20.1 / Threaded (BSPT): per ISO 7-1 / BS 21
Surface: FBE / polyester resin powder / Water-based red or black paint / Hot-dip galvanized / duplex coating / Plastic lining (PE, UPVC, etc.)

Product Details

ASTM A135 ERW steel pipe from TPMC is produced by high-frequency welding of steel strip, featuring a longitudinal weld seam, precise dimensions and lightweight construction.
FM Approved, it provides reliable performance in water-based fire protection systems, including wet, dry, deluge, and preaction pipelines.
Additionally, our TPMC pipe excels in conveying gas, vapor, water, or other liquids, and is ideal for general structural applications.

Available sizes for Schedule 10 pipe (Light wall)

Outside diameter	Wall thickness	Weight (kg/m)	Test pressure (MPa, min)	Ref. No.
3/4″ / DN20 / 26.7 mm	SCH10 / 2.11 mm	1.28	17.2	P0302-SCH10 (ISO)
1″ / DN25 / 33.4 mm	SCH10 / 2.77 mm	2.09	17.2	P0303-SCH10 (FM)
1-1/4″ / DN32 / 42.2 mm	SCH10 / 2.77 mm	2.69	17.2	P0304-SCH10 (FM)
1-1/2″ / DN40 / 48.3 mm	SCH10 / 2.77 mm	3.11	16.5	P0305-SCH10 (FM)
2″ / DN50 / 60.3 mm	SCH10 / 2.77 mm	3.93	13.1	P0306-SCH10 (FM)
2-1/2″ / DN65 / 73.0 mm	SCH10 / 3.05 mm	5.26	11.7	P0307-SCH10 (FM)
3″ / DN80 / 88.9 mm	SCH10 / 3.05 mm	6.46	9.6	P0308-SCH10 (FM)
4″ / DN100 / 114.3 mm	SCH10 / 3.05 mm	8.37	7.6	P0309-SCH10 (FM)
5″ / DN125 / 141.3 mm	SCH10 / 3.40 mm	11.58	6.9	P0310-SCH10 (FM)
6″ / DN150 / 168.3 mm	SCH10 / 3.40 mm	13.85	5.8	P0311-SCH10 (FM)

Note: For NPS 6″, SCH10 wall thickness and weight are not listed in ASTM A135-2021. TPMC references ASME B36.10-2022 for these values.

Available sizes for Schedule 40 pipe

Outside diameter	Wall thickness	Weight (kg/m)	Test pressure (MPa, min)	Ref. No.
1/2″ / DN15 / 21.3 mm	SCH40 (STD) / 2.77 mm	1.27	17.2	P0301-SCH40 (ISO)
3/4″ / DN20 / 26.7 mm	SCH40 (STD) / 2.87 mm	1.69	17.2	P0302-SCH40 (ISO)
1″ / DN25 / 33.4 mm	SCH40 (STD) / 3.38 mm	2.50	17.2	P0303-SCH40 (ISO)
1-1/4″ / DN32 / 42.2 mm	SCH40 (STD) / 3.56 mm	3.39	17.2	P0304-SCH40 (ISO)
1-1/2″ / DN40 / 48.3 mm	SCH40 (STD) / 3.68 mm	4.05	17.2	P0305-SCH40 (ISO)
2″ / DN50 / 60.3 mm	SCH40 (STD) / 3.91 mm	5.44	17.2	P0306-SCH40 (ISO)
2-1/2″ / DN65 / 73.0 mm	SCH40 (STD) / 5.16 mm	8.63	17.2	P0307-SCH40 (ISO)
3″ / DN80 / 88.9 mm	SCH40 (STD) / 5.49 mm	11.29	17.2	P0308-SCH40 (ISO)
4″ / DN100 / 114.3 mm	SCH40 (STD) / 6.02 mm	16.07	15.2	P0309-SCH40 (ISO)
5″ / DN125 / 141.3 mm	SCH40 (STD) / 6.55 mm	21.77	13.4	P0310-SCH40 (ISO)
6″ / DN150 / 168.3 mm	SCH40 (STD) / 7.11 mm	28.26	12.2	P0311-SCH40 (ISO)
8″ / DN200 / 219.1 mm	SCH40 (STD) / 8.18 mm	42.55	10.8	P0312-SCH40 (ISO)
10″ / DN250 / 273.0 mm	SCH40 (STD) / 9.27 mm	60.29	9.8	P0313-SCH40 (ISO)
12″ / DN300 / 323.8 mm	SCH40 / 10.31 mm	79.70	9.2	P0314-SCH40 (ISO)
14″ / DN350 / 355.6 mm	SCH40 / 11.13 mm	94.55	9.0	P0315-SCH40 (ISO)