Steel Water & Gas Pipe ASTM A53
Electric-resistance welded steel pipe to ASTM A53 Grade A for water, gas, air and general low-pressure piping. Sizes run from NPS ½" (Ø21.3 mm) to NPS 12" (Ø323.8 mm), DN 15 to DN 300, with walls from 2.77 mm to 12.70 mm including Schedule 40 and 80. Standard length 6 m, special lengths on request.
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Available Sizes & Finishes
77 sizes available
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Applications & Selection Guide
ASTM A53 Grade A pipe is electric-resistance welded carbon-steel pipe for water, gas and air lines at moderate pressure, sprinkler and plumbing systems, and general mechanical piping. Sizes follow the nominal pipe size (NPS) system, so the pipe fits standard threaded and welded fittings and flanges.
Sizes run from NPS ½" (Ø21.3 mm, DN 15) to NPS 12" (Ø323.8 mm, DN 300), with walls from 2.77 mm to 12.70 mm, including Schedule 40 and Schedule 80 where listed. The pipe is hydrostatically tested to the ASTM A53 pressures; each size page shows its test pressure, inch dimensions and weight in kg/m and lb/ft.
Standard length is 6 m; special lengths from 4 m to 12 m are available on request. Ends are plain or bevelled, and the surface can be prepared for hot-dip galvanizing. The minimum order is 10 t per size; if the size is already in production, we can accept orders from 5 t.
Technical guides
Pipe schedule chart: Sch 40 and Sch 80 sizes, wall thickness and weight (NPS ½" to 24")
Steel pipe schedule chart for NPS ½" to 24": outside diameter, Schedule 40 and Schedule 80 wall thickness and weight per metre to ASME B36.10M, what NPS, DN and schedule mean, and metric EN equivalents.
Read the guide →Flange dimensions: EN 1092-1 PN6 to PN40 and ASME B16.5 Class 150 and 300
Flange dimension tables for EN 1092-1 PN6, PN10, PN16, PN25 and PN40 and ASME B16.5 Class 150 and 300: outside diameter, bolt circle, number and size of bolts, and why PN and Class flanges do not mate.
Read the guide →Butt-weld fittings dimensions: elbows, tees, reducers and caps to ASME B16.9 and EN 10253
Centre-to-end dimensions of 90° and 45° elbows, equal tees, reducers and caps to ASME B16.9 for NPS ½" to 24", long and short radius elbows, concentric and eccentric reducers, and how EN 10253 fittings differ.
Read the guide →Metal weight calculator
Free metal weight calculator: kg/m and total weight of steel, stainless and aluminium tubes, bars, angles and sheet. Formulas and densities explained.
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Fiber laser cutting of sheet, plate and tube in steel, stainless steel and aluminium, from your DXF files and with material supplied.
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Learn more →Product Information
Material Grade
ASTM A53 Grade A
Manufacturing Standard
ASTM A53/A53M
Material Type
Steel
Category
Water & Gas Pipe
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