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16mm - 30mm Structural Steel Tubing , Grade 25 Hot / Cold Finished Seamless Tube

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TORICH INTERNATIONAL LIMITED

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16mm - 30mm Structural Steel Tubing , Grade 25 Hot / Cold Finished Seamless Tube

Place of Origin : Zhejiang, China (Mainland)

Certification : ISO9001, ISO14001, TS16949

Price : negotiable

MOQ : negotiable

Standard : GB, GB/T 8162

Standard2 : GB/T 8162-1999

Grade Group : 10#-45#, Cr-Mo alloy, Q195-Q345

Grade : 20#, 45#, 30CrMo, Q345

Thickness : 0.4 - 30 mm

Section Shape : Round

Outer Diameter(Round) : 5 - 400 mm

Secondary Or Not : Non-secondary

Application : Structure Pipe

Technique : Cold Drawn

Surface Treatment : Other

Special Pipe : Structural Steel Tube

Alloy Or Not : Non-alloy

Product name : Structural Steel Tube

OD : 5-400mm

WT : 0.4-30mm

Length : 1-12m

Material : #25

Shape : Round Shape

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16mm - 30mm Steel Grade 25 Hot Rolled / Cold Drawn Seamless Tube Structural Steel Pipes

GB/T8162 Structural Seamless Steel Tube with Steel Grade 20 45 Q345 20Cr 40Cr 20CrMo 30-35CrMo 42CrM
Heat Treatment: Hot Rolling & Cold Drawn
Tolerance of the OD &WT:

OD Tolerance:

Production Method	OD Tolerance
Hot Rolling(Extrusion)	±1% or ±0.50mm
Cold Drawn(Cold Rolled)	±1% or ±0.30mm

Tolerance for wall thickness:

1.Wall thickness tolerance of Hot Rolling steel tube:

Production Method	OD (DN)	WT/OD	Tolerance
Extruded tube	≤102	/	±12.5% or ±0.40mm
	＞102	≤0.05	±15% or ±0.40mm
		＞0.05-0.10	±12.5% or ±0.40mm
		＞0.10	+12.5% -10%
Heat expanding steel tube	/		±15%

2.Wall thickness tolerance of Cold Drawn(Cold Rolled) steel tube:

Production Method	WT	Tolerance
Cold Drawn(Cold Rolled) steel tube	≤3	+15%/-10% or ±0.40mm
Cold Drawn(Cold Rolled) steel tube	＞3	+12.5% -10%

Mechanical Property:

16mm - 30mm Structural Steel Tubing , Grade 25 Hot / Cold Finished Seamless Tube

Bending tolerance:
WT≤15mm, Bending≤1.5mm/m
WT＞15mm~30mm, Bending≤2.0mm/m
WT＞30mm/OD≥351mm, Bending≤3.0mm/m

Ovality and Wall unevenness:
The ovality and wall unevenness should be no more than 80% of the OD and wall thickness.(Or according to customer’s request)

Test:
Bending test
Hardness test
Impact test
Squeezing test
Non-destructive test

Product Name	Steel Grade 25 Structural Steel Tubing Hot Rolled / Cold Drawn 16mm - 30mm
Material	alloy steel
Section Shape	Round
Standard	GB/T8162
Grade	20 45 Q345 20Cr 40Cr 20CrMo 30-35CrMo 42CrM
Brade	Torich

Application

_{The structural steel tubes used for liquid transportation}

FAQ

Q: Are you trading company or manufacturer ?

A: We are factory.

Q: How long is your delivery time ?

A: It is according to quantity. And usually is 35-50 days after receiving 30% T/T in advance.

Q: How to get the sample of structural steel tube ?

1.You are requested to pay for sample charges and courier charges from China to your country; and the free sample is according the product like size, steel grade and quantity, please consult our sales for details
2.Sample charges will be refunded when order is placed.

Q: What is your terms of payment ?

1.T/T: 30% deposit in advance, the balance 70% paid before shipment

2.30% down payment, the balance 70% paid against L/C at sight

3.Upon negotiation

Product Tags:

hollow structural steel pipe

hot dip galvanized steel pipe

16mm - 30mm Structural Steel Tubing , Grade 25 Hot / Cold Finished Seamless Tube Manufactures

16mm - 30mm Structural Steel Tubing , Grade 25 Hot / Cold Finished Seamless Tube Images

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