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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

welded steel pipe

welding steel tubing

Place of Origin:

CHINA

Brand Name:

TORICH

Certification:

ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR

Model Number:

GB/T 19793

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Product Details
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
Highlight:

welded steel pipe

,

welding steel tubing

Payment & Shipping Terms
Minimum Order Quantity
0.5 Ton
Price
USD 500-1000 per Ton
Packaging Details
In bundles in wooden box
Delivery Time
35-45 Days
Payment Terms
L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability
60000 Tons per Year
Product Description

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 SPHC 0GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC 1

GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC 2GB/T 19793 Small Diameter Thick Wall Welded Pipe / Tube Q235 Q195 SPCC SPHC 3

 

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