Line Pipe & Piling

Seamless Carbon & API 5L Line Pipe

Himount supplies seamless carbon steel pipe and API 5L line pipe for oil, gas, boiler, mechanical and industrial pipeline projects.

Product Overview

Seamless Carbon & API 5L Line Pipe

Himount supplies seamless carbon steel pipe and API 5L line pipe for oil and gas transmission, pressure service, mechanical tubing, boiler support and industrial piping. Buyers can quote by API, ASTM, EN, ISO or GB references, with OD, wall thickness, schedule, end finish, coating and inspection level confirmed before offer.

API 5L / ASTMLine pipe and pressure pipe
A106 Gr.B / X gradesCommon grade references
Plain / beveled endsEnd finish by order
MTC + inspectionDocumented export supply
Seamless Carbon & API 5L Line Pipe main product imageSeamless Carbon & API 5L Line Pipe stock detailSeamless Carbon & API 5L Line Pipe export packing detail

Key Specifications

Product seriesSeamless carbon steel pipe, seamless line pipe, pressure service pipe and mechanical seamless tube.
Primary standardsAPI 5L, ISO 3183, ASTM A106, ASTM A53, ASTM A333, EN 10216, GB/T 8163 and project pipe specifications.
Common gradesA106 Gr.B, A53 Gr.B, API 5L Gr.B, X42, X46, X52, X56, X60, X65, X70, X80, P235GH, 20# and Q345B.
Manufacturing routeHot rolled or cold drawn seamless pipe route based on diameter, wall thickness, tolerance and end use.
Supply rangeSeamless pipe is commonly quoted by NPS, OD and schedule. ASTM A106 covers NPS 1/8 to NPS 48, while ASTM A53 covers NPS 1/8 to NPS 26. Actual Himount supply range is confirmed by mill route, wall thickness and grade.
Ends and coatingPlain end, beveled end, threaded/coupled option where applicable, black paint, varnish, bare surface or protective coating by order.
Order details to confirmStandard, grade, OD, wall thickness, length, end finish, coating, test requirement, quantity, packing, certificate level and destination port.

Typical Applications

  • Oil and natural gas pipeline
  • Pressure service and boiler support
  • Mechanical and industrial pipework
  • Water transmission and utility projects
  • Fabrication and structural pipe use

Procurement Notes

  • Confirm whether the order requires API 5L PSL1 or PSL2.
  • Specify hydrostatic test, NDT, impact test and certificate level before quotation.
  • Confirm end finish, wall tolerance, random/fixed length and marking requirement.

International Model Search Index

Common standards, models and RFQ terms

Standards and grade calls
API 5L seamless pipeISO 3183 line pipeASTM A106 Gr.B pipeASTM A53 Gr.B seamlessAPI 5L X52 pipeAPI 5L X65 line pipeEN 10216 pipeGB/T 8163 seamless pipe
Size and order phrases
SCH40 seamless pipeSCH80 carbon pipeNPS seamless pipebeveled end pipeblack painted seamless pipehydro tested pipe
Buyer search phrases
seamless carbon steel pipe supplierAPI 5L line pipe exporterA106 Gr.B seamless pipeX52 seamless line pipeoil and gas seamless pipe

These terms reflect common international RFQ language. Final supply must follow the ordered standard edition, project specification, MTC, inspection plan and agreed contract terms.

Buyer FAQ

Questions buyers usually confirm before order

Is API 5L pipe always seamless?

No. API 5L can be seamless or welded depending on order. This page covers seamless carbon and line pipe routes; welded line pipe is listed separately.

What is the difference between ASTM A106 and API 5L?

ASTM A106 is commonly used for high-temperature pressure service, while API 5L is used for line pipe. Final selection depends on project specification.

Can PSL2 pipe be supplied?

PSL2 requirements can be reviewed by grade, size and testing plan. Impact test, chemical controls and NDT requirements should be confirmed before quotation.

What pipe details are needed for RFQ?

Send standard, grade, OD, wall thickness or schedule, length, end finish, coating, quantity, certificate level and destination port.

Related Products

Products often quoted together

ERW Carbon Steel PipeLSAW & Submerged Arc PipeSSAW, Spiral Welded & Piling Pipe

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