قطر كبير Q235B Q345 دوامة الأنابيب الملحومة

commodity

  large diameter Q235B Q345 Spiral welded pipe

O.D

20*20-600*600mm/20*30-600*800mm

W.T

1.0-35.0mm

length

3-12m or according to per request

material

Q195-Grade B, SS330, SPC, S185

Q215-Grade C,CS Type B, SS330, SPHC

Q235---Grade D, SS400, S235JR, S235JO, S235J2

Q345---SS500, ST52, ST37

10#,20#,45#, etc

Surface treatment

1, Oiled
2, Galvanized

3, Painting black
4, According to the customers` requirement

 Test

1.Chemical Component Analysis (C,Si,Mn,S,P)

2.Mechanical Properties (Tensile Strength, Yield Strength, Elongation )

MTC is supplied.

3.Third party inspection: BV,SGS

Package

1, Big OD: in bulk

2, Small OD: packed by steel strips

3, Plastic bags

4, According to customer`s requirements

Delivery

Normally 10-20 days after get deposits or according to quantity

Advantage

1.large inventory
2.high quality,low price
3.good after-sales service
4.short delivery time

Yield Strength Grade

Demotic Raw-material Grade

235

Q235B, Q235C, Q235D, Q235qC, Q235qD

345

Q345A, Q345B,Q345C,Q345D,Q345Qc, Q345Qd, 

StE355, B480GNQR

Yield Strength Grade

235

345

390

Ceq(%)

≤0.36

≤0.43

≤0.45

Note: In order to improve the performance of steel,390 could add the microelement such as V, Nb, Ti, Mo and N etc.

Yield Strength Grade

W.T

Yield Strength

Tensile Strength (Mpa)

Elongation

(20°C) Impact Value J

(mm)

 (Mpa)

(%)

235

4~12>12~22

≥235

≥375

≥23

≥27

345

4~12>12~22

≥345

≥470

≥21

≥27

390

4~12>12~22

≥390

≥490

≥19

≥27