Prefabricated Straight Buried ...

Standard: CJ/T155-2001

Specification: 219.1×8.7×12000mm

Performance indicators of the outer protective pipe:

Density: Not less than 940 kg/m ³. Carbon black: 2.5%±0.5%.

The difference in melt flow rate: ≤0.5g/10min

Tensile yield strength: ≥19 MPa

Elongation at break: ≥350%

Longitudinal retraction rate: ≤3%

Tensile force (80℃, minimum yield time 1500h) : ≥4MPa

Technical specifications of insulation layer:

The closed-cell rate of the foam is ≥88%

Foam density: ≥60 kg/m ³.

Compressive stress: ≥0.3MPa

Water absorption rate: ≤10%

Technical specifications of insulation pipes:

The increase rate of the outer diameter of the outer protective pipe: ≤2%

Allowable deviation of the centerline: ≤10mm

Angular deviation: ≤2°

Shear strength: ≥0.12 MPa at 23±2℃

At 140±2℃, it is ≥0.08MPa

Impact resistance: There are no visible cracks on the outer protective pipe.

Tangshan Wenwu Trading Co., Ltd. was established in 2010, is a professional company focused on the trade of steel products.The company is headquartered in Tangshan, Hebei. With its superior geographical location and convenient transportation network, it is closely connected to major steel production bases and markets across the country and even around the world. It has rich experience and excellent reputation in the fields of spiral steel pipes, straight seam steel pipes, coils and steel plates.

The company has established long-term and stable cooperative relations with a number of large steel production enterprises at home and abroad to ensure product quality and timeliness of supply.At the same time, the company has a professional quality inspection team, which strictly controls the quality of each batch of products to ensure that they meet national and international advanced standards.
The company has an experienced and professional foreign trade team. Its members are proficient in multiple languages, familiar with international market rules and trade processes, and can provide customers with efficient and high-quality services.Relying on its keen insight into the market and good customer relationship management capabilities, the team continues to explore new markets to meet the individual needs of customers.

The company pays attention to the efficiency and safety of logistics and distribution, and has established long-term cooperative relations with a number of well-known logistics companies to ensure that steel products can be delivered to customers in a timely and accurate manner.In addition, the company also provides perfect after-sales service and has set up a special after-sales service team to deal with the problems encountered by customers in the process of using the products in a timely manner, with customer satisfaction as the guide, and continuously improve the quality of service.

In the future, Tangshan Wenwu Trading Co., Ltd. will continue to uphold the business philosophy of “integrity management, quality first, customer first”, continuously optimize product structure, improve service level, and strive to become a leading enterprise in the field of foreign trade in the global steel industry, and make greater contributions to promoting the development of global steel trade.