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GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC

Name: GBT 19793 Small Diameter Thick Wall Welded Pipe Tube Q235 Q195 SPCC SPHC
Brand: TORICH
Price: 500 USD

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Brand Name :	TORICH
Model Number :	GB/T 19793
Certification :	ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR
Price :	USD 500-1000 per Ton
Payment Terms :	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :	60000 Tons per Year
Delivery Time :	35-45 Days

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GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC

GB/T 19793 small diameter Thick-wall welded pipe/tube Q235 Q195 SPCC SPHC

Typical fields of application are in:
Automobile and motorcycle Shock Absorber Pipe
Hydraulic-cylinder Pipe
Mechanical steel pipes for auto and motor parts
Gas Spring pipe
motor casing pipe etc

size:length--2~12m WT--2~4.5mm OD--16~50mm

material:Q235 Q195 SPCC SPHC

Production process: ordinary high-frequency welded pipe

Advantages: small diameter and thick wall

Surface Quality:The internal and external surfaces of the steel tube are not allowed to have cracks, scabs, folds, delaminations, laps, and burns. Allows for scribes, scratches, misalignment of welds, burns, oxide scales, and external burr removal traces that are not more than a negative wall thickness deviation

Inspection items:

chemical composition

Tensile test

Ultrasonic examination

Eddy current flaw detection

Bending test

Flattening test

Permissible Tolerance of Outer Diameter and Wall Thickness (mm)

Type of steel Tube	Dimension of steel tube		Permissible tolerance

			Average class	High class

Hot-rolled (extruded and expanded) tube	Outer diameter D	All	±1% (min.+/-0.50)	-

	Wall thickness	All	+15%/-12.5% (min.+4.5/-4.0)	-

Cold-drawn (cold-rolled) tube	Outer diameter D	6~10	±0.2	±0.15
		>10~30	±0.40	±0.20
		>30~50	±0.45	±0.30
		>50	±1%	±0.8%
	Wall thickness	<1	±0.15	±0.12
		>1~3	+15% -10%	+12.5% -10%
		>3	+12.5% -10%	±10%
Note: For hot-expanded tubes with outer diameter>35mm,the permissible tolerance of wall thickness is±18%.

Longitudinal Mechanical Properties of Steel Tubes

NO.	Steel Grade	Tensile Strength(Mpa)	Yield point(Mpa)		Elongation after breaking(%)
			s<16	s>16	Elongation after breaking(%)
			Not less than
1	10	335~475	205	195	24
2	20	410~550	245	235	20
3	Q295	430~610	295	285	22
4	Q345	490~665	325	315	21

Permissible deviations of the product analysis from the specified limits

Element	Limiting values for cast analysis	Permissible deviatioon of the product analysis in % by mass
C	≤0.22	+0.02
Si	≤0.55	+0.05
Mn	≤1.60	+0.10
P	≤0.025	+0.005
S	≤0.015	+0.003
Al	≥0.025	-0.005

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GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC

GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC

GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC

welded steel pipe

welding steel tubing

GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC

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