Galvanized Seamless Rectangle Steel Pipe
Jointless hollow section with a zinc coated surface in schedule wall thicknesses
Specifications
Seamless Steel Pipe, Steel Pipe
Seamless Line Pipe to API 5L and ASTM A106
Line pipe for oil and gas transmission with ends prepared before it leaves the mill
Pipeline pipe is a seamless steel pipe with a hollow section and no joint around it, used to carry fluid media such as oil and natural gas. It is specified by transmission pipeline contractors, plant piping engineers and EPC procurement teams working to API 5L, ASTM A106, ASTM A53, the DIN17204 and DIN2448 family or JISG3452-54. Covering grade B alongside the API line pipe grades X42 X46 X52 X60 and X65 and the German ST and Japanese STPT designations means a route that changes grade partway along it can still be bought on one order. End preparation is fixed before shipment, bevelled above 2 inch and plain at 2 inch and below, so joints reach the spread ready to fit up.
- Product Name — Seamless Steel Pipe Pipeline Pipe
- Product Form — Seamless line pipe
- Standards — API 5L ASTM A106 ASTM A53 DIN17204 DIN17440 DIN2448 JISG3452-54
- Material — A53B A106B API 5L B X42 X46 X52 X60 X65 ST37.0 ST35.8 St37.2 St35.4/8 G42 STPT42 STB42 STS42 STPT49 STS49
- Outside Diameter — 1/2 inch to 48 inch or customized
Why It Is Specified
Key Benefits of Seamless Steel Pipe Pipeline Pipe
API and ASTM Grades in the Same Size Range
API 5L grade B and X42 X46 X52 X60 and X65 sit alongside A53B and A106B. A transmission line and its station piping can be bought from one stock list.
German and Japanese Designations Covered
ST37.0 ST35.8 St37.2 and St35.4/8 are quoted alongside G42 STPT42 STB42 STS42 STPT49 and STS49, which matches drawings issued by European and Japanese engineering offices.
Ends Prepared Before Shipment
Above 2 inch the pipe is supplied bevel end and at 2 inch and below plain end, with plastic caps or screwed and socket ends available. Fit up on the spread does not start with an end preparation step.
Wall From Thin Utility Runs To Heavy Wall
Schedules run SCH5S to SCH160 and XS, covering 1.65mm to 80mm, so a station header and a small bore drain line can come from the same order.
Coating Applied at the Mill
Black painted, galvanized, natural, anticorrosive 3PE coated and polyurethane foam insulated finishes are applied before loading, which removes a coating contract at the destination yard.
Fixed and Random Lengths
5.8m and 6m fixed, 12m fixed and 2-12m random are all offered so joint length can follow the stringing and handling method.
Problems It Solves
What This Material Removes From Your Process
Bevelling Work Starting on the Spread
Plain end joints have to be bevelled before welding can begin. Pipe above 2 inch is supplied bevel end so the crew starts at fit up instead of at the bevelling machine.
Grade Designations From Different Engineering Offices
The same duty may be called A106B, ST35.8 or STPT42 depending on who drew it. All three designation families are quoted here so the line list does not need rewriting.
Coating Contract at the Destination Yard
Bare pipe needs a separate coating scope before it can be buried. Black paint, galvanizing, 3PE coating and polyurethane foam insulation are applied before loading.
Small Bore Lines Bought Separately
Runs at 2 inch and below often get split onto another order. Plain end pipe with plastic caps or screwed and socket ends is available in the same size list.
Weld Seam in a Transmission Wall
A seam is one more feature to inspect along the whole length. The seamless body has a hollow section with no joint around it.
Application Scenarios
Where It Is Used
Oil and Natural Gas Transmission Lines
Buried trunk lines and gathering systems carrying oil and natural gas where API 5L grade governs the design.
Pump and Compressor Station Piping
Above ground station headers and manifolds using A106B and A53B where high temperature service and welding are both routine.
Refinery and Process Plant Runs
Process piping inside refineries and chemical plants built from seamless pipe with prepared bevel ends.
Insulated and Coated Buried Sections
Sections specified with anticorrosive 3PE coating or polyurethane foam insulation for buried or thermally controlled duty.
Utility and Drain Lines Under 2 Inch
Small bore runs supplied plain end with plastic caps or with screwed and socket ends for threaded assembly.
Replacement Spools for Existing Lines
Short lengths cut and bevelled to match an existing run during a shutdown tie in.
Who It Is For
Buyers Who Specify This Product
- Transmission pipeline contractors buying API 5L X52 or X60 joints for a stringing program
- Plant piping engineers specifying ASTM A106 grade B for station and refinery headers
- EPC procurement teams consolidating API ASTM DIN and JIS line items onto one order
- Shutdown and maintenance teams buying bevelled replacement spools for tie ins
- Coating and insulation applicators buying pipe already 3PE coated or foam insulated
- Pipe distributors stocking a seamless line pipe range for regional contractors
Technical Data
Specifications and Technical Features
Values below come from the product data published by Shandong Tianyu Metal Products. Confirm the exact grade and size against your order.
| Product Name | Seamless Steel Pipe Pipeline Pipe |
|---|---|
| Product Form | Seamless line pipe |
| Standards | API 5L ASTM A106 ASTM A53 DIN17204 DIN17440 DIN2448 JISG3452-54 |
| Material | A53B A106B API 5L B X42 X46 X52 X60 X65 ST37.0 ST35.8 St37.2 St35.4/8 G42 STPT42 STB42 STS42 STPT49 STS49 |
| Outside Diameter | 1/2 inch to 48 inch or customized |
| Wall Thickness | SCH5S SCH10S SCH20S SCH20 SCH30 STD SCH40 SCH60 SCH80 SCH100 SCH140 SCH160 XS or customized |
| Wall Range | 1.65mm to 80mm |
| Length | 5.8m 6m fixed 12m fixed 2-12m random or customized |
| Surface Treatment | Black painted galvanized natural anticorrosive 3PE coated polyurethane foam insulation |
| End | Bevel end above 2 inch plain at 2 inch and below with plastic cap or screwed and socket |
| Application | Transportation of fluid media such as oil and natural gas |
| Place of Origin | China |
| Certification | ISO9001 BV SGS RoHS |
Technical Features
- Seamless pipe body with hollow section and no joint around it
- Standards API 5L ASTM A106 ASTM A53 DIN17204 DIN17440 DIN2448 and JISG3452-54
- Grades A53B A106B API 5L B X42 X46 X52 X60 and X65
- German designations ST37.0 ST35.8 St37.2 and St35.4/8
- Japanese designations G42 STPT42 STB42 STS42 STPT49 and STS49
- Outside diameter 1/2 inch to 48 inch or customized
- Wall by schedule SCH5S to SCH160 and XS covering 1.65mm to 80mm
- Ends bevel above 2 inch plain at 2 inch and below with plastic cap or screwed and socket
Materials
- Carbon steel line pipe in API 5L grade B A53B and A106B
- Higher strength API line pipe grades X42 X46 X52 X60 and X65
- German boiler and pipe steels ST37.0 ST35.8 St37.2 and St35.4/8
- Japanese pipe steels G42 STPT42 STB42 STS42 STPT49 and STS49
Certification
- ISO9001
- BV
- SGS
- RoHS
- Mill test certificate supplied with each shipment
Manufacturing
How It Is Made and Processed
Seamless pipe production giving a hollow section with no joint around it
Sizing to the ordered outside diameter and schedule
Heat treatment matched to the ordered grade
Straightening and cutting to fixed or random length
End preparation bevelled above 2 inch and plain at 2 inch and below
Surface treatment by painting galvanizing 3PE coating or foam insulation
Capping marking and bundling for export loading
Quality Control
Checks Before It Ships
- Grade verified against the ordered API ASTM DIN or JIS designation
- Outside diameter and wall checked against the ordered schedule
- Bevel angle and plain end condition inspected against the ordered end type
- Straightness and surface checked before coating is applied
- Length and bundle count confirmed against the packing list
- Mill test certificate issued with the shipment
Customization
What We Can Change on Your Order
- Grade nominated per line item across the API ASTM DIN and JIS designations
- Outside diameter and wall outside the standard listing on request
- Length supplied as 5.8m 6m or 12m fixed or as 2-12m random
- End type set as bevel plain screwed and socket or fitted with plastic caps
- Surface treatment selected from black paint galvanizing 3PE coating or polyurethane foam insulation
- Cut spool lengths produced against a shutdown tie in list
Comparison
Seamless Steel Pipe Pipeline Pipe Against the Alternatives
| Welded line pipe | The seamless body has a hollow section with no joint around it, so there is no longitudinal seam to inspect along the length of the run. |
|---|---|
| Seamless casing pipe | Line pipe is certified to API 5L and ASTM A106 for fluid transport rather than to a casing specification for a well string. |
| Stainless seamless pipe | Carbon and low alloy line pipe grades are chosen where the medium is oil or natural gas and external coating rather than alloy content handles corrosion. |
| Pipe bevelled on site | Bevel ends applied at the mill above 2 inch remove a machining step before welding starts on the spread. |
Use Guide
Specifying Handling and Welding Notes
- State the governing standard and the grade together because A106B and API 5L B are not interchangeable in every design
- Give the end type with the size so bevel and plain end items are not mixed in the same bundle
- Choose the external coating against the buried splash zone or above ground condition of each section
- Keep plastic caps on until immediately before fit up so the bore stays clean
- Match fixed or random length to the stringing and lifting equipment on the route
- Ask for the mill test certificate so each grade in the line list is documented before welding procedures are set
Questions Buyers Ask
Seamless Steel Pipe Pipeline Pipe FAQ
Which line pipe grades are available?
A53B A106B and API 5L grade B along with X42 X46 X52 X60 and X65. German ST and Japanese STPT STB and STS designations are also quoted.
Do the pipes arrive bevelled?
Above 2 inch the standard end is a bevel end. At 2 inch and below the pipe is plain end, and plastic caps or screwed and socket ends can be specified.
What outside diameter and wall can you supply?
Outside diameter runs 1/2 inch to 48 inch, from 21.3mm upward, or customized. Wall is by schedule from SCH5S to SCH160 and XS, covering 1.65mm to 80mm.
Can you supply pipe already coated for burial?
Yes. Anticorrosive 3PE coating, galvanizing, black paint and polyurethane foam insulation are applied before shipment.
What lengths do you cut to?
5.8m and 6m fixed, 12m fixed, or 2-12m random. Cut spool lengths can be made to a tie in list.
Can one order mix API ASTM and DIN items?
Yes. The stock covers API 5L, ASTM A106 and A53, the DIN17204 DIN17440 and DIN2448 family and JISG3452-54, so mixed line lists can be quoted together.
What certificates are supplied?
A mill test certificate ships with the material and ISO9001 BV SGS and RoHS documentation is available on request.
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