16Mn SAE1045 Q235 Seamless Carbon Steel Pipes API 5L Seamless Line Pipe Gas

16Mn SAE1045 Q235 Seamless Carbon Steel Pipes API 5L Seamless Line Pipe Gas

seamless pipes grades and production methods

1. Round bar making Hollow Bar
according to customer's demanded material to produce the round bar, then making annealled heat treatment, then drill the hole as customer demanded inner diameter into the round bar, round bar piercing, making rough hole, then make precision processing to make outer diameter and inner diameter as requested. Any size hollow bar can be produced as demanded.

Tolerance for hollow round bar, forged round bar drilling hole hollow bar ASME SA530

length tolerance -0 - +50mm
Round bar making Hollow bar cost is high

2. Hot rolled Hollow Bar
using hot rolled steel pipe billet to make heating and piercing, elongating, sizing and stranghtening, cooling, finally hollow bars finished, this is the type most commonly used. Because it is hot rolled, so cost is lowest, but it is suit for large quantity, for small quantity, have to make cold drawn or round bar piercing. size: outer diameter 32mm- 499mm, wall thickness 4mm- 80mm

3. Cold drawn Hollow Bar
for outer diameter not over than 63.5mm, small size hollow bar, when demanded quantity is under 5 tons, usually make cold drawn hollow bar, using larger size hot rolled hollow bar to draw to the size demanded.
some size can be finished only by one time drawing, but some other sizes might need twice or three times to finish drawing, it takes time, so the cost is higher.
cold drawn size outer diameter 32mm- 63.5mm

4. Hot- expanding Hollow Bar
For hollow bar sizes are special, not common sizes, have to use smaller thick wall hollow bar to hot expand to be larger size hollow bar, but the technical property for hot-expanded hollow bar will be lower than the original hollow bar. Size: outer diameter over 356mm.
the seamless pipe grades can be supplied

Seamless Steel pipe grades

WHY CHOOSE US :

We have huge experience, expertise in Mild steel pipe and the best dedicated team to deliver best quality products delivered as well as services at the most affordable prices for Mild steel pipe. We are looking ourselves as good business partners for customers and are looking forward to establish long term professional relationship. With our world class manufacturing facilities to Mild steel pipe.

We are able to deliver on time for all grades of Mild steel pipe. Our stock house always has storage capacity for keeping lots of order from our clients. We make sure that the packaging of ordered materials is done in the best way.

We are the exporters, stockiest & suppliers of Stainless Steel,Galvanized steel,Carbon steel,Aluminum steel and Nickel Alloy Coil,Strips,Sheets, Tube,Foil and Shims. Wuxi Laiyuan Special Steel Co., Ltd. takes immense pleasure in introducing itself as one of the leading names in the Engineering Industry having Integrated Steel Complex with modern integration to produce Strips, Coil, Sheet, Foil. we have experience in this field for many years.

We have a self contained unit with forming, Forging, Welding, Machining,Heat treatment, and Facilities for physical & Chemical testing, This enables us to meet strict requirements of manufacturing and testing codes.

Each of our department right from procurement, production, inventory, market, sales and services are fully automated for a better supply chain management, so as to offer the best product quality and prompt service to our clients. Along with technological equipment, manpower is also given special attention. All our professionals are highly dedicated and committed to their client's requirements. Our team of workers starves to provide quality service to you according to your specification.

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