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GB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation

Minimum Order Quantity : 5 TON Price : 600-1200 USD/T
Packaging Details : packing in wooden boxes or in hexagonal bundles Delivery Time : 35days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 20000 T/Year
Place of Origin: CHINA Brand Name: TORICH
Certification: ISO9001:2008,ISO14001:2008,TS16949,CE PED,TUV,APIABS,BV,Lloyd's,CCS,DNV,CCS,KR,RINA,SON,GL Model Number: GB/T14291

Detail Information

Name: GB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation Grade Group: Q195-Q345
Surface: Normalized Material: Q215/Q295/Q235/Q345 A/B
Shape: Round Shape Technique: EFW
WT: 0.5-50mm OD: 5-600mm
High Light:

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Product Description

Product Name:TORICH  GB/T14291 Q235A Q295B Q345A Welded Steel Pipes for ore pulp transportation

Standard: GB/T14291

OD: 5-600mm

WT: 0.5-50mm

Length: 1-12mm or according to customers' actual application and production.

Application:for ore pulp transportation

Steel Grade:Q235A Q235B Q295A Q345B Q295B Q345A

Technology:High frequency straight seam welding(HFW)

Characteristic:

Good concentricity

Good surface quality

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE

 

QUALITY CONTROL

1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8~ Packing and Stocking.

 

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current te
st and ultrosonic test to eliminate longitudinal and transversal defects.

 

Table 1 Outer Diameter,Wall Thicknes,Theoretical Weight and Test Pressure

Norminal Outer Diameter(D)/mm Norminal Wall Thickness(S)/mm Theoretical Weight/(kg/m) Test Pressure/MPa
Q235A,Q235B Q295A,Q295B Q345A,Q345B
21.3 2.5 1.16 15 15 15
21.3 3 1.35 15 15 15
21.3 3.5 1.54 15 15 15
25 2.5 1.39 15 15 15
25 3 1.63 15 15 15
25 3.5 1.86 15 15 15
25 4 2.07 15 15 15
26.9 2.5 1.50 15 15 15
26.9 3 1.77 15 15 15
26.9 3.5 2.02 15 15 15
26.9 4 2.26 15 15 15
31.8 2.5 1.81 15 15 15
31.8 3 2.13 15 15 15
31.8 3.5 2.44 15 15 15
31.8 4 2.74 15 15 15
33.7 2.5 1.92 15 15 15
33.7 3 2.27 15 15 15
33.7 3.5 2.61 15 15 15
33.7 4 2.93 15 15 15
38 2.5 2.19 15 15 15
38 3 2.59 15 15 15
38 3.5 2.98 15 15 15
38 4 3.35 15 15 15
40 2.5 2.31 15 15 15
40 3 2.74 15 15 15
40 3.5 3.15 15 15 15
40 4 3.55 15 15 15
42.4 2.5 2.46 15 15 15
42.4 3 2.91 15 15 15
42.4 3.5 3.36 15 15 15
42.4 4 3.79 15 15 15
48.3 2.5 2.82 14.6 15 15
48.3 3 3.35 15 15 15
48.3 3.5 3.87 15 15 15
48.3 4 4.37 15 15 15
51 2.5 2.99 13.8 15 15

 

TABLE 2 Allowable deviation of outer diameter and wall thickness

Unit: millimeter

Nominal outside diameter D Allowable deviation of outer diameter Permissible deviation of wall thickness
D≤48.3 ±0.50 ±10%S
48.3<D≤273 ±1%D
D>273 ±0.75%D

 

TABLE 3 Mechanical Property

Grade

Tensile strengthGB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation 0

N/mGB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation 1

Lower yield strength GB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation 2 /

N/mGB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation 1

Elongation A%

Not less than

D≤168.3 D>168.3
Q235A,Q235B 375 235 15 20
Q295A,Q295B 390 295 13 18
Q345A,Q345B 470 345 13 18
Note : Tensile test arbitration time is based on longitudinal sample.

 

TABLE 4 Inspection items, test methods and sampling number of steel pipes

NO Inspection project Sampling method and test method Sampling quantity
1 chemical composition GB/T 20066,GB/T 223,GB/T 4336 One each furnace(canister)
2 Tensile test GB/T 228,GB/T 2975 One each batch
3 Tensile test GB/T 241 One by one
4 Ultrasonic examination GB/T18256 One by one
5 Eddy current flaw detection GB/T 7735 One by one
6 Bending test GB/T 244 Two per batch
7 Flattening test GB/T 246 Four each roll

 

 

GB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation 4 GB/T14291 Q235A Q295B Q345A Welded Steel Pipes For Ore Pulp Transportation 5

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