High Pressure & Moderate Temp EFW Pipes

High Pressure & Moderate Temperature EFW Steel Pipe

Product Brief Introduction

High Pressure & Moderate Temperature EFW Pipe belongs to electric fusion welded steel pipe, which is manufactured by bending steel plate or steel strip into circular tube blank then completing full welding molding. Compared with seamless steel pipe, welded pipe features lower comprehensive cost and higher continuous production efficiency.

The service temperature range of this product covers -45°C to +200°C, with excellent pressure bearing performance. Its design pressure scope is 14–22 MPa, making it fully applicable to various high-pressure medium conveying projects. Main application scenarios include long-distance oil & gas transmission pipelines, chemical process equipment supporting pipes, power station circulating systems and low-temperature LNG transportation pipelines, occupying a core position in energy and petrochemical industries.

Product Core Feature & Technical Definition

The raw material blank for this series pipe is whole steel plate or hot rolled strip steel. When selecting matching pipe grades for engineering projects, it is necessary to distinguish medium temperature & high pressure working conditions from low-pressure normal temperature or ultra-high temperature high-pressure pipelines to avoid model mismatch.

The industry general definition divides working conditions as follows: high pressure refers to medium pressure between 10MPa and 100MPa, requiring pipes to bear stable static fluid pressure for long-term operation; medium temperature covers the range from -40°C to 400°C, taking both low-temperature impact toughness and medium-temperature structural stability into consideration, without involving extreme cryogenic or super high temperature environments.

The whole weld of EFW pipe shall implement 100% full coverage non-destructive testing during production, ensuring the weld mechanical strength and toughness reach the equivalent level of base metal, which is the key difference from high-frequency resistance welded pipe.

Its core manufacturing advantage relies on mature electrofusion welding technology to realize high-pressure bearing capacity, meanwhile optimizing material composition and implementing targeted heat treatment to balance medium-temperature stability. As global energy infrastructure construction expands year by year, market demand for this pipe keeps rising, and our factory continuously upgrades production process and inspection standards.

Product Comprehensive Advantages

This pipe can safely transport high-pressure crude oil, natural gas and other energy media over long distances. The longitudinal submerged arc welding forming process is concise and stable with ultra-high production efficiency. The finished pipe possesses outstanding anti-corrosion performance under acidic medium service environment. With continuous progress of welding equipment and flaw detection technology, internal weld defect rate is greatly reduced, product quality is steadily improved, and our factory can supply abundant complete specification series to meet diversified project demands.

Complete Technical Parameter Table

Factory Scale & Operation Philosophy

The factory currently employs a total of 150 staff, including 30 professional technical engineers and structural designers. Sufficient technical team strength guarantees all production links fully comply with international standard specifications. Internal functional departments cover General Office, Finance, Technology & Equipment, Quality Control, Supply Chain, Sales and Production Workshop.

We adhere to the operation tenet of integrity as foundation, reputation as priority, customer-oriented service and social feedback. We build a standardized enterprise operation system based on strict quality control, refined management, market demand orientation and technological iterative innovation. Complete full-process quality management and after-sales service systems have been established, and we persistently pursue a 100% product qualification rate and 100% customer satisfaction rate.

FAQ

The standard mass production delivery cycle is 30–45 working days after receiving formal order confirmation. For spot inventory specifications, goods can be delivered within 1–2 days only.

We support sample provision service. Low-value small test samples can be supplied free of charge with freight collected on customer side. For large-size high-value pipe samples, corresponding sample processing fees will be charged.

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