ASTM A554 Welded Stainless Rectangular Steel Pipe

Standard of square and rectangular pipe:

 

GB/T3094-2012, GB/T6728-2002, ASTM A500, JIS G 3466, DIN EN 10210, GB/T178-2005

 

 

Technique:

 

Hot rolled, Cold rolled, ERW, High-frequency welded,Extruded.

 

Application:

 

(1).Machinery manufacture: glass machinery, agricultural machinery, textile machinery, papermaking machinery, food machinery, electrical equipment, sanitation equipment.

 

(2).Roads and Bridges: railway, aviation, expressway, overpass, road fence, traffic signs.

 

(3).Construction engineering: steel structure construction, sports venue, three-dimensional garage, exhibition hall.

 

(4).Decoration: wrought iron doors and windows, outdoor advertising, pavilion and vestibule, glass curtain wall.

 

(5).Transportation: automobile manufacture, ship manufacture, container, tricycle, tower crane.

 

 












Surface Allowed Deviation: 

 

Assessment Criteria	First Grade			Second Grade
Wall thickness/t	4mm≤t≤10mm ±8%t	4mm≤t≤10mm ±8%t
	10mm≤t≤22mm ±6%t	10mm≤t≤22mm ±6%t
	Suitable for flat parts	Suitable for flat parts
Squareness	90°±1.0°	90°±1.5°
Corner radius of circular arc	t≤6mm(1.5-2.5)t
	6mm≤t≤10mm(2-3)t
	T>10mm(2.5-3.0)t
Concave and convex degree	≤5% side length		≤6% side length
Bending degree	≤1.5mm/m, total bending degree≤0.15% specified length		≤2mm/m, total bending degree≤0.2% specified length
Distortion degree	2mm+0.5mm/m		-
Scale accuracy	Ordinary precision 0- +50mm		Ordinary precision 0- +70mm
	Fine scale 0- +5mm		Fine scale 0- +15mm
Cutting quality	100mm≤side length≤300mm		100mm≤side length≤300mm
	Cutting slope≤3mm		Cutting slope≤4mm
	300mm<side length≤500mm		300mm<side length≤550mm
	Cutting slope≤3mm		Cutting slope≤6mm
	End without cutting burr		End with few cutting burr

 

Mechanical Property:

 

Yield Strength Grade	Wall thickness (mm)	Yield strength (Mpa)	Tensile strength (Mpa)	Elongation%	Impact work (J)
235	4-12>12-22	≥235	≥375	≥23	≥27
345	4-12>12-22	≥345	≥470	≥21	≥27
390	4-12>12-22	≥390	≥490	≥19	≥27