Company Details
  • Torich International Co.,Ltd--The Steel Tube Maker

  •  [Zhejiang,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Service , Trade Company
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:31% - 40%
  • Certs:GB, ISO9001, ISO14001
  • Description:Boiler Seamless Steel Tubes,Multi-rifled Steel Tubes,High-pressure Boiler Tubes
Torich International Co.,Ltd--The Steel Tube Maker Boiler Seamless Steel Tubes,Multi-rifled Steel Tubes,High-pressure Boiler Tubes
Home > Products > Seamless Boiler Steel Tubes > Multi-rifled High-pressure Boiler Seamless Steel Tubes

Multi-rifled High-pressure Boiler Seamless Steel Tubes

Share to:  
    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,FCA,CPT
    Min. Order: 2 Ton
    Delivery Time: 35 Days

Basic Info

Model No.: GB/T20409

Type: Seamless, Boiler Pipe

Certification: API, CE, BSI, UL

Application: Boiler Pipe

Section Shape: Round

Surface Treatment: Oiled

Usage: Thermal Equipment, For High-pressure Boilers

Technique: Cold Drawn

Material: Alloy Steel, 20G 20MnG 25MnG SA210 SA213

Name: GB/T20409 20G Multi-rifled High-pressure Boiler Seamless Steel Tubes

Shape: Round Shape

Length: 8-12m

OD: 3-420mm

WT: 0.5-50mm

Additional Info

Packaging: In bundles with seaworthy packing

Productivity: 20000 Tons per Year

Brand: Torich

Transportation: Ocean,Land,Air

Place of Origin: Zhejiang, China (Mainland)

Supply Ability: 60000 Ton per year

Certificate: ISO9001:2008 ISO14001:2008, TS16949, CE PED, TUV, API

HS Code: 7306110000

Port: Shanghai,N

Product Description

A leading manufacturer of Seamless Boiler Steel Tubes in China, offers high quality Steel Heat Exchanger Tubes,Seamless Carbon Boiler Tube,Alloy Steel Boiler Tube
Seamless Boiler Steel Tubes are produced by Cold Drawn Seamless Processing,

with steel grade of Low Carbon Steel, Medium Carbon Steel, Alloy Steel etc.
Technical Standards as
ASTM A179, ASTM A192, ASTM A210, ASTM A213, ASTM A334, ASTM A335 etc
DIN17175, EN10216-2, GB/T 5310, BS3059, etc.
Steel Grade:
Carbon Steel Grade:
ST35.8, ST37.0, ST44, ST52;
E155, E195, E215, E235, E275, E355;
195GH, P235GH, P265GH, P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2;
SAE1010, SAE1020, SAE1026, SAE1035, SAE1045;
Carbon steel tube: SA178, A179, A192, A210, SA213, SA214, etc.

Alloy Steel Grade:
T2, T5, T9, T11, T12, T17, T21, T22, T91,T92, 15Mo3,16Mo3, 13CrMo44;
SAE4130, SAE4140, 40Cr, 40Cr4, 10CrMo910, 12CrMo910, 11CrMo910,
25CrMo4, 35CrMo, 35CrMo4, 42CrMo4, 34CrMo4, 20MnV, 20MnV6,20CrMn,12Cr1MoVG;

Product Name:TORICH GB/T20409 20G 20MnG 25MnG SA210 SA213 Multi-rifled High-pressure Boiler seamless steel tubes

Standard: GB/T20409

OD: 3-420mm

WT: 0.5-50mm

Length: 8-12m or according to customers' actual application and production.

Application:High-pressure Boiler

Steel Grade:20G 20MnG 25MnG SA210 SA213

Technology:Hot rolled,cold rolled,cold drawn

Characteristic:

Good concentricity

Good surface quality

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE


Table6 Longitudinal mechanical properties of internal screw tubes at room temperature

Number

Grade

tensile strength

RM

MPa(N/mm2)

Lower yield strength
ReL/MPa((N/mm2)

Elongation

A/%

Impact energy

AKV/J

Not less than

1

20G

410~550

245

24

35

2

20MnG

415

240

22

35

3

25MnG

485

275

20

35

4

12CrMoG

410~560

205

21

35

5

15CrMoG

440~640

235

21

35

Table4 The grade and chemical composition of steel

Number

Brand

chemical composition(mass fraction)/ %

C

Mn

Si

Cr

Mo

S

P

1

20G

0.17~0.23

0.35~0.65

0.17~0.37

--

--

0.020

0.025

2

20MnG

0.17~0.23

0.70~1.00

0.17~0.37

--

--

0.020

0.025

3

25MnG

0.22~0.29

0.7~1.00

0.17~0.37

--

--

0.020

0.025

4

12CrMoG

0.08~0.15

0.40~0.70

0.17~0.37

0.40~0.70

0.40~0.55

0.020

0.025

5

15CrMoG

0.12~0.18

0.40~0.70

0.17~0.37

0.80~1.10

0.40~0.55

0.020

0.025

Note1:Residual element content of 20G.20MnG.25MnG should satisfy: Cu0.20%.Cr0.25%.Ni0.25%.V0.08%.Mo0.15%;The remaining elements of other brands should satisfy: Cu0.20%.Ni0.30%.

Note2:The acid soluble aluminum in 20G steel should not be more than 0.010%.

Note3:The nitrogen content of the steel produced by the oxygen converter plus the refining of the furnace should not be more than 0.008%.

The size of the internal screw tubes and the allowable deviation of the thread parameters

Code

Project

[A" teeth types allowable deviation

[B" teeth types allowable deviation

A

O.D38.1mm

38.1mmO.D50.8mm

50.8mmO.D63.5mm

O.D63.5mm

±0.15mm

±0.20mm

±0.25mm

±0.30mm

--

B

O.D38.1mm

38.1mmO.D50.8mm

50.8mmO.D63.5mm

O.D63.5mm

--

±0.15mm

±0.20mm

±0.25mm

±0.30mm

C

I.D of the root of the screw Thread:

O.D-(1.11×Minimum W.T×2)

O.D38.1mm

38.1mmO.D50.8mm

50.8mmO.D63.5mm

O.D63.5mm

±0.15mm

±0.20mm

±0.25mm

±0.30mm

±0.15mm

±0.20mm

±0.25mm

±0.30mm

E

Minimum I.D

Negative deviation to zero

Negative deviation to zero

F

Minimum W.T

+22%

0

+22%

0

G

Thread tips

--

--

I

Thread top width

--

--

Ja

Height of thread:

O.D38.1mm

38.1mmO.D50.8mm

50.8mmO.D63.5mm

O.D63.5mm

±0.3mm

±0.18mm

±0.20mm

±0.23mm

±0.28mm

K

Side Angle of thread.

±15°

±15°

O

radius of rounded corner at the root of thread

--

--

M

Thread pitch

±3.2mm

±3.2mm

N

Thread lead

±3.2mm×thread tips

±3.2mm×thread tips

Qb

Helix angle

Rating

Rating

T

Thread top width (axial)

±1.3mm

±1.3mm

U

Thread top (axial) groove width

--

--

a. For the B type, the maximum deviation of any thread height can exceed the allowable deviation specified in the table, but it should not exceed the allowable deviation of 0.08mm, and the average height of all threads should be in line with the given deviation range.

b. The rating is based on the axis of the pipe.


Looking for ideal Boiler Seamless Steel Tubes Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Multi-rifled Steel Tubes are quality guaranteed. We are China Origin Factory of High-pressure Boiler Tubes. If you have any question, please feel free to contact us.

Product Categories : Seamless Boiler Steel Tubes

Product Images
  • Multi-rifled High-pressure Boiler Seamless Steel Tubes
  • Multi-rifled High-pressure Boiler Seamless Steel Tubes
  • Multi-rifled High-pressure Boiler Seamless Steel Tubes
  • Multi-rifled High-pressure Boiler Seamless Steel Tubes
  • Multi-rifled High-pressure Boiler Seamless Steel Tubes
Email to this supplier
  • *Subject:
  • *Messages:
    Your message must be between 20-8000 characters
Copyright © 2018 Torich International Co.,Ltd--The Steel Tube Maker All rights reserved.
Communicate with Supplier?Supplier
Richard SHEN Mr. Richard SHEN
What can I do for you?