在线咨询

TOP

在线咨询

Online Contacts Qrcode

Jiahui

Alice

Phone

+86 133 2635 8227

E-mail

jiahui@baotube.com

E-mail

alice@baotube.com

Work hours

7*24 hours

扫码关注

TOP

Wanjintong Metal

China Steel Manufacturer

Home

Products

Precision Steel Tubes Seamless Steel Tubes Alloy Steel Pipe Hydraulic Steel Tubes Stainless Steel Tubes

News

Steel Knowledge Industry News Internal Information

About Us

English

繁體中文
English

REQUEST A QUOTE

Product
Product Detail

Seamless steel pipes for fluids

Process: Cold drawing and cold rolling, bright annealing
Surface: Clean inner and outer walls without impurities
Ra：≤1.6‑3.2μm
Material: Common 20 # Q355B
Specification: Outer diameter 8-203mm, wall thickness 1.5-22mm customizable

Sales Count Click

Sales Count

Click

Select the number of specifications

OD*WT（mm）

32*3 38*4 42*4 48*4 57*4.5 60*5 108*6 168*8 273*12 Custom Specs

Please check the product information you want!

Specifications select

Product Detail

Product Overview：

Seamless steel pipes for fluids are generally used for transporting fluids. They are a type of steel pipe with a hollow cross-section, no welds, and are widely used for transporting fluids such as oil, natural gas, coal gas, water, and certain solid materials. Compared with solid steel materials such as round steel, steel pipes are lighter in weight when their bending and torsional strength is the same. They are an economical cross-sectional steel material widely used in the manufacture of structural and mechanical parts, such as oil drill rods, automotive transmission shafts, bicycle frames, jack sleeves, and steel scaffolding used in construction.

Product List
Product Name:	GB8163 Seamless Steel Pipe for Fluid Transport \| Seamless Pipe
Product Name:	20 # Seamless steel pipe for fluid \| Seamless pipe
Product Name:	45 # Seamless steel pipe for fluid \| Seamless pipe
Product Name:	Seamless steel pipes for hot-rolled fluids
Product Name:	Seamless steel pipe for hot expansion fluid
Product Name:	Seamless steel pipe for low-pressure fluid
Product Name:	Seamless steel pipe for national standard fluids \| Seamless pipe

Parameter range
Outer diameter	Φ6mm‑Φ630mm
Wall thickness	0.8mm‑75mm
Standard length	1‑12m， Customizable short and extended non ruler
Outer diameter accuracy	Maximum ± 0.03mm
Executive Standards	ASTM A106, API 5L, DIN 17175, GB/T 8163
Non-standard customization	Special wall thickness, inner wall polishing, acid pickling and passivation, and fluid pressure resistant deep processing can all be customized

Common specifications in the market
Outer diameter (mm)	32	38	42	48	57	60	76	‍89	108
Common wall thickness (mm)	2.5、3.0、3.5	2.5、3.0、3.5、4.0	3.0、3.5、4.0	3.0、3.5、4.0	3.0、3.5、4.0、4.5	3.0、3.5、4.0、5.0	3.5、4.0、4.5、5.0、6.0	4.0、4.5、5.0、6.0	4.0、4.5、5.0、6.0

Outer diameter (mm)	133	159	168	219	273	325	377	426
Common wall thickness (mm)	4.0、4.5、5.0、6.0	4.5、5.0、6.0、7.0	5.0、6.0、8.0	6.0、7.0、8.0、10	7.0、8.0、10、12	8.0、10、12	9.0、10、12	10、12、14

Optional tolerance range
Tolerance control	Optional manufacturing process
Tolerance ≤ 0.05 mm	Cold rolling
Tolerance ≤ 0.10 mm	Cold rolling
Tolerance ≤ 0.30 mm	Cold drawing \| Cold rolling
Tolerance ≤ 0.50 mm	Cold drawing \| Hot rolling
Tolerance ≤ 1.00 mm	Hot rolling \| Hot expanding

Outer diameter tolerance
Steel pipe type	Allowable deviation of outer diameter (mm)
Hot rolled (expanded) pipe	± 1% D or ± 0.5, whichever is larger
Cold drawn (rolled) tube	± 0.75% D or ± 0.3, whichever is larger

Hot rolled wall thickness tolerance
Outer diameter D (mm)	S/D ratio	Wall thickness deviation (mm)
≤102	—	± 12.5% S or ± 0.4, whichever is greater
＞102	≤0.05	± 15% S or ± 0.4, whichever is greater
＞102	0.05‑0.10	± 12.5% S or ± 0.4, whichever is greater
＞102	＞0.10	+12.5%S /‑10%Siscommon.p...
Thermal expansion pipe	All	+17.5%S /‑12.5%S

Cold drawn wall thickness tolerance
Wall thickness (mm)	Wall thickness deviation (mm)
≤3	+15% S/-10% S or ± 0.15, whichever is larger
3‑10	+12.5%S/‑10%S
＞10	±10%S

Geometric tolerance
Project	Indicators
Ellipticity	≤ 80% outer diameter tolerance (specified in the contract)
Bending degree	≤ 1.5 mm/m
Tip: The tolerance of fluid pipes is loose and cannot replace GB/T3639 precision steel pipes for machining sleeves.

Optional delivery status
Oil removal from oil pipes	Annealing and straightening	Steel pipe corrosion prevention
Steel pipe threading	Length cut-to-length	Steel pipe coating
Steel pipe cap	Exquisite bundling	Beveling

Now ready to place an order:

You can view Ordering Matters | Payment Matters, or enter Submit Purchase | Contact Us

No comment

Previous : Precision steel pipes for mechanical parts Next : Stainless steel pipe

Product Detail

Product Overview：

Product List
Product Name:	GB8163 Seamless Steel Pipe for Fluid Transport \| Seamless Pipe
Product Name:	20 # Seamless steel pipe for fluid \| Seamless pipe
Product Name:	45 # Seamless steel pipe for fluid \| Seamless pipe
Product Name:	Seamless steel pipes for hot-rolled fluids
Product Name:	Seamless steel pipe for hot expansion fluid
Product Name:	Seamless steel pipe for low-pressure fluid
Product Name:	Seamless steel pipe for national standard fluids \| Seamless pipe

Parameter range
Outer diameter	Φ6mm‑Φ630mm
Wall thickness	0.8mm‑75mm
Standard length	1‑12m， Customizable short and extended non ruler
Outer diameter accuracy	Maximum ± 0.03mm
Executive Standards	ASTM A106, API 5L, DIN 17175, GB/T 8163
Non-standard customization	Special wall thickness, inner wall polishing, acid pickling and passivation, and fluid pressure resistant deep processing can all be customized

Common specifications in the market
Outer diameter (mm)	32	38	42	48	57	60	76	‍89	108
Common wall thickness (mm)	2.5、3.0、3.5	2.5、3.0、3.5、4.0	3.0、3.5、4.0	3.0、3.5、4.0	3.0、3.5、4.0、4.5	3.0、3.5、4.0、5.0	3.5、4.0、4.5、5.0、6.0	4.0、4.5、5.0、6.0	4.0、4.5、5.0、6.0

Outer diameter (mm)	133	159	168	219	273	325	377	426
Common wall thickness (mm)	4.0、4.5、5.0、6.0	4.5、5.0、6.0、7.0	5.0、6.0、8.0	6.0、7.0、8.0、10	7.0、8.0、10、12	8.0、10、12	9.0、10、12	10、12、14

Optional tolerance range
Tolerance control	Optional manufacturing process
Tolerance ≤ 0.05 mm	Cold rolling
Tolerance ≤ 0.10 mm	Cold rolling
Tolerance ≤ 0.30 mm	Cold drawing \| Cold rolling
Tolerance ≤ 0.50 mm	Cold drawing \| Hot rolling
Tolerance ≤ 1.00 mm	Hot rolling \| Hot expanding

Outer diameter tolerance
Steel pipe type	Allowable deviation of outer diameter (mm)
Hot rolled (expanded) pipe	± 1% D or ± 0.5, whichever is larger
Cold drawn (rolled) tube	± 0.75% D or ± 0.3, whichever is larger

Hot rolled wall thickness tolerance
Outer diameter D (mm)	S/D ratio	Wall thickness deviation (mm)
≤102	—	± 12.5% S or ± 0.4, whichever is greater
＞102	≤0.05	± 15% S or ± 0.4, whichever is greater
＞102	0.05‑0.10	± 12.5% S or ± 0.4, whichever is greater
＞102	＞0.10	+12.5%S /‑10%Siscommon.p...
Thermal expansion pipe	All	+17.5%S /‑12.5%S

Cold drawn wall thickness tolerance
Wall thickness (mm)	Wall thickness deviation (mm)
≤3	+15% S/-10% S or ± 0.15, whichever is larger
3‑10	+12.5%S/‑10%S
＞10	±10%S

Geometric tolerance
Project	Indicators
Ellipticity	≤ 80% outer diameter tolerance (specified in the contract)
Bending degree	≤ 1.5 mm/m
Tip: The tolerance of fluid pipes is loose and cannot replace GB/T3639 precision steel pipes for machining sleeves.

Optional delivery status
Oil removal from oil pipes	Annealing and straightening	Steel pipe corrosion prevention
Steel pipe threading	Length cut-to-length	Steel pipe coating
Steel pipe cap	Exquisite bundling	Beveling