product description
product superiority

This product Square Pipes, our company use special process which is different to other mills.

Normally this kind of pipes is use Extrusion production.

But in our mill, pipes after piercing pipes will be cold drawn to round mother  semi-finished goods, and then use Inside and outside square mould doing cold drawn→ heat treatment→straightening→cutting end→finished product

With this special process the finished product have following advantage:
1) Sizes Radius and Shapes will be more precision, 
2)With better mechanical properties
3)Can be customized prduce according to the drawings and requirements of client
Product show




Export Countries &Areas

Our steel pipes have been exported to more than 30 countrices and areas including USA, Canada, South America, Africa, South East Asia, Middle East, South Asia, Austria, Russina, Korea,Europe and so on


Company Profile

Weifang Weierda Petroleum Machinery Co., Ltd is located in Anqiu economic development zone Weifang City, Shandong Province, China. The company is a professional mill in production of seamless steel pipe which investment by Weifang Weierda Steel Pipe Company,. It is the most important projects of Anqiu economic development zone.
Weierda Petroleum was invested 3.5 hundred million China Yuan, with area over 160,000 square meters, have most advanced MPM continuous rolling mill and other advanced equipment like cold rolling  mill, cold-drawing machine, sizing mill and tube processing equipment. Can produce marine pipe, high-pressure boiler tube, machining tube, high strength oil pipeline and petroleum machinery parts, the annual production is more than 80000MT.
Our main product is the seamless steel pipes, covering nearly all the size of Small diameter seamless steel tube, OD13mm to 133mm, WT:1.5mm to 20mm., widely used in metallurgy,chemicals,machinery,construction,petroleum,coal&gas,electricity and other industries. Can produce as per GB,JIS,ASTM,DIN and other standards, Products exported to more than 26 countries and regions more than half of them are for exportation.
Depend on long-term accumulated in manufacture, technology and marketing from Weifang Weierda Steel Pipe Company, Weifang Weierda Petroleum Machinery Co., Ltd was set up on high-level and development in strictly standard, As always attaches importance to product quality and credibility. Weierda Petroleum have almost all necessary testing equipment,  with API 5L, API 5CT,ISO/TS 16949,pressure piping A2 and other certificate,
Weierda Petroleum actively support the national sustainable development strategy and environmental protection, Use the clean energy such as natural gas protect the environment.
Weierda Petroleum warmly welcome any friend to visit our factory, and sincerely wish to create great business with all the excellent clients. 

Production Equipment


Inspection Facilities


Product certificate


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