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Galvanized Rhs Rectangular Hollow Section Steel Pipe

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Address: Rm. 1202, Buildiing A, Wanda Plaza, Zhangjiagang, Jiangsu, China

Contact name:Sandy

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Galvanized Rhs Rectangular Hollow Section Steel Pipe

Country/Region	china
City & Province	jiangsu
Categories	Metal Casting Machinery

Product Details

Galvanized Cs Carbon Steel Welded Tube Rectangular Hollow Section Steel Pipe

Specification of Thickness of Anti-corrosive Coating

Products Name	hollow section steel pipes pre-galvanized steel pipe
THK	0.5-2.75mm
Length	5.8m or 6m or as per customer request
HS code	7306309000
Zinc coating	40-275g/m2
payment	T/T L/C cash
Application	Fluid Pipe, Fluid transport and construction
MOQ	1TONS
Produce line	6 lines
Advantage	the same quality as hot dip galvanized pipe, but much cheaper than hot dip galvanized pipe

Pre-Galvanized square pipe.Zinc coating 40-275g/m2

Square 10*10-200*200mm

Rectangular10*20-150*200mm

THK:0.5-2.75mm

Length:5.8m or 6m or as per customer request

HS code:7306309000

Zinc coating:40-120g/m2

Advantage: the same quality as hot dip galvanized pipe, but much cheaper than hot dip galvanized pipe

Roduction Method

The cold drawn welded tube is produced by drawing ERW (electric resistance welded tube).During this process the sizing (wall thickness, inside and outside diameter), as well as weld integrity and surface finish is closely controlled to produce tube of the required size and mechanical property characteristics.

Main Date

Material: E355
Other Aviliable Material: E155 E195 E235 E275
Outer Diameter Range: 10-50mm
Wall Thickness Range: 1.5-8mm
t/D ≥ 0.2(Normal: t/D=0.1)
Standard: En10305-2
Process: Cold Drawn, Cold Rolling

Typical Specification

	Grade	Welding Typical Specification	Yield Strength
1	E355	Φ38×4.5	355~450Mpa

Chemical Component

Steel Number	Quality Level	Thickness/mm	Deoxidize Method	C(%)≤	Si(%)≤	Mn(%)≤	P(%)≤	S(%)≤
E185(Fe310)	0	-	-	-	-	-	-	-
E235(Fe360)	A B C D	≤16 >16-25 ≤40 >40	N - - E NE NE GF	0.22 0.17 0.20 0.17 0.20 0.17 0.17	- 0.40 0.40 0.40 0.40 0.40 0.40	- 1.40 1.40 1.40 1.40 1.40 1.40	0.050 0.045 0.045 0.045 0.045 0.040 0.035	0.050 0.045 0.045 0.045 0.045 0.040 0.035
E275(Fe430)	A B C D	≤40 >40	- E NE NE GF	0.24 0.21 0.22 0.20 0.20	- 0.40 0.40 0.40 0.40	- 1.50 1.50 1.50 1.50	0.050 0.045 0.045 0.040 0.035	0.050 0.045 0.045 0.040 0.035
E355(Fe510)	C D	≤30 >30 ≤30 >30	NE NE GF GF	0.20 0.22 0.20 0.22	0.55 0.55 0.55 0.55	1.60 1.60 1.60 1.60	0.040 0.040 0.035 0.035	0.040 0.040 0.035 0.035

Stength Yield

Steel Number	Yield Strengh/MPa
Steel Number	≤16	>16-40	>40-63	>63-80	>80-100	>100-150	>150-200
E185(Fe310)	-	185	175	-	-	-	-	-
E235(Fe360)	A B BNF C D	235 235 235 235 235	225 225 225 225 225	215 - 215 215 215	215 - 215 215 215	215 - 215 215 215	195 - 195 195 195	185 - 185 185 185
E275(Fe430)	A B C D	275 275 275 275	265 265 265 265	255 255 255 255	245 245 245 245	235 235 235 235	225 225 225 225	215 215 215 215
E355(Fe510)	C D	355 355	345 345	335 335	325 325	315 315	295 295	285 285

Delivery Condition:

1) +C No heat treatment after the final cold drawing process.
2) +LC After the final heat treatment there is a suitable drawing pass.
3) +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere.
4) +A After the final cold drawing process the tubes are annealed in a controlled atmosphere.
5) +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere.

Advantage (compare with seamless cold drawn tube)

Better shape
Improved quality surface
Tight Excentricity and wall thickness tolerances (the eccentric
Tube more safety
Good toughness at low temperature
USA Market: 90% of the cylinder in the USA market are produced with welded tubes
Cost fix Lengths More Cheaper

Advantage of Our Company

Top class of welding line: SG/76 Enhanced High-precise High Frequency Welding Tube Production Line. The tube is of small outer diameter (D) and thick wall thickness (t): t/D≥0.2, and high size precision.

Application