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

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

Brand Name : TORICH

Model Number : GB/T 19793

Certification : ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR

Place of Origin : CHINA

MOQ : 0.5 Ton

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

Packaging Details : In bundles in wooden box

Product name : GB/T 19793 small diameter Thick-wall welded pipe/tube

Kewordy : GB/T 19793 small diameter Thick-wall welded pipe/tube

Type : Welded pipe

Surface : Oiled

Material : Q235 Q195 SPCC SPHC

Usage : Shock absorber

Shape : Round Shape

Length : 2-12m

WT : 2-4.5mm

OD : 16-50mm

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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
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

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


Product Tags:

welded steel pipe

      

welding steel tubing

      
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