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

Prime Quality 30# Seamless Steel Pipe Carbon Steel Seamless Pipe For Oil Gas Pipeline

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

For the detailed package of seamless pipe we could do as bellow:
1. Big size: by bulk
2. Small size:
1) in bundle with steel strip
2) inside with bundle, outside with plastic cloth
3) by bulk, then put into container directly
3. For container
1)20FT GP Container: pipe length less than 5.8m, qty max 27ton
2)40FT GP Container: pipe length less than 12m, qty max 26.5ton

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.