nude wrestling with daisy ducati getting nude and roughed up by jack friday as winner fucks loser

Collection exhibition Online Message Website map Welcome to Changzhou Tianzhan Steel Pipe Co., Ltd! Main production: seamless steel pipe, precision steel pipe, seamless steel pipe, seamless pipe and other products!

 Changzhou Tianzhan Steel Pipe Co., Ltd

17 years focus on customized alloy seamless steel pipe manufacturers Tianzhan - create every steel pipe with ingenuity



 Tianzhan steel pipe products are widely used and the effect proves the strength

Tianzhan special-shaped steel pipe products have stable quality and are exported to Europe and America

Back to list Source: Release date: December 25, 2018

Tianzhan steel pipe focuses on the customized special-shaped steel pipe, among which the thick walled hexagonal pipe is the most representative. Our company specially customized 16Mn raw materials from the round steel plant to ensure Tianzhan Steel pipe Quality. After more than 4 years of cooperation with customers, there is no product quality problem, the quality is stable, exported to Europe and the United States. Finally, it saves materials for customers, improves production efficiency, and reduces the comprehensive cost of customers by 10% - 15%.

Requirements for finished products of profiled steel pipe 】:

1. High requirements for surface finish and bright tube for delivery;

2. Hardness has certain requirements;

3. Each product needs to be extruded.

 Tianzhan special shaped steel pipe

Technical difficulties in manufacturing special shaped steel pipe 】:

1. The surface is difficult to be treated and easy to have oxide scale;

2. The hardness is difficult to grasp;

3. The product is easy to crack during extrusion, and the main reasons are as follows:

     a) If the hardness is too high, the steel pipe is easy to crack;

     b) There are small impurities in the steel which are cracked by extrusion;

Since all the materials purchased in the market are unqualified, Our company specially customizes 16Mn raw materials with less impurities from round steel plant to ensure the quality of finished steel pipe After more than 4 years of cooperation with customers, no product quality problems, quality stability, exported to Europe and the United States.

Under the joint technical research of both parties, in order to avoid the subsequent heat treatment process of customers and achieve the purpose of saving materials for customers, the hardness requirements are added to the steel pipe technology of our company. In the end, it saves materials for customers and improves production efficiency, And for customers to reduce 10% - 15% of the overall cost.

Changzhou City Tianzhan steel pipe Ltd. focuses on the production of seamless steel pipe and steel pipe mechanical parts processing products, can provide customers with a certain product design and solutions. The main products are: cold drawn seamless steel pipe, finish rolling seamless steel pipe, alloy seamless steel pipe, special-shaped seamless steel pipe, etc. Contact information: 151-6111-7830.

Consultation hotline

vrallure busty ebony beauty daizy cooper plays with her sex toys in virtual reality daddy4k papa intelligent ne perd pas sa chance davoir des relations sexuelles avec ses fils nouvelle copine reality junkies petite alexis tae gets turned on by her cop stepdads jay smooth big cock daddy4k sweetie and boyfriends old dad celebrate her birthday with sex loan4k le banquier est pret a aider une fille si elle donne quelque chose en retour