As a lsaw steel pipe factory, we will share the information and news about lsaw pipe. Like what is LSAW, the differences between LSAW and SSAW, or the differences between welded pipe and seamless pipe. And to show the lsaw pipe inspection method, lsaw pipe manufacturing process.

Our Advantages

We have whole set of manufacturing and inspection equipment. And we have more than 15 years export experience. We have got API certificate, ISO certificate and CE certificate for many years. And through the news we hope our customers know our products and our factory in details. If you have any questions please tell me, and I will do my best to help you.

ASTM A53 pipe specification

ASTM A53 Pipe Specification (Part 1)

This standard is issued under the fixed designation ASTM A53 pipe specification /A 53M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last re-approval.

LSAW pipe loading


LSAW pipe Loading is a important process in procedure of steel pipe contract. Usually manufacturer is responsible for the steel line pipe shipping. The manufacturer shall prepare and follow loading diagrams which details about how the pipe arranged, protected and secured on trucks, railcars, barges or ocean-going vessels, whichever is applicable.

steel pipe end - bevelled (BE)

Steel Pipe End

Grade L175P or A25P PSL1 pipe should furnished with threaded ends. Other grades of PSL 1 pipe should furnished with plain ends. Useless another acceptable end finish specified in the sales order. PSL 2 pipe should furnished with plain ends. LSAW steel pipe end should be free from burrs.

API Spec 5L lsaw pipe steel marking

LSAW Steel Pipe Marking

If purchase order requires API Spec 5L pipe to be supplied. LSAW steel pipe marking identifying Spec 5L pipe shall be required. Additional markings, as desired by the manufacturer or as specified in the purchase order, may be applied but shall not interrupt the sequence of the required markings.

lsaw pipe manufacturing process

LSAW Pipe Manufacturing Process

Winsteel Group as a professional lsaw pipe welding factory, we have got API 5L & ISO certificate for more than decade years. Welded Pipes made by lsaw pipe mill are using steel plate as raw material. Let’s see lsaw pipe manufacturing process, first, plate is rolled in the circular section with the help of plate bending machine.