Oil And Gas Transmission Steel Pipes

Product Overview

Our factory specializes in the R&D and manufacturing of long-distance oil & gas transmission steel pipes. This product acts as the core pipeline material for crude oil and natural gas transportation, featuring high tensile strength, excellent low-temperature toughness, reliable corrosion resistance and outstanding weldability. It is widely applicable to multiple engineering scenarios: onshore long-distance trunk pipelines, subsea offshore pipelines, and oilfield gathering & transmission networks. All products strictly comply with mainstream international standards including API 5L and ISO 3183. Our core product is straight seam submerged arc welded pipe (LSAW). The full range of dimension parameters covers outer diameter 21.3mm–2200mm, wall thickness 2.5mm–60mm, and single pipe length 6m–18.3m. The finished pipes possess stable comprehensive mechanical performance and support diversified connection forms, with fully customizable dimensions and technical indicators as per project drawings. We have built a complete closed-loop customized service system covering demand communication, engineering solution design, sample trial production, mass batch manufacturing, finished product full-inspection, professional packaging and global logistics delivery. Both product quality and delivery schedule are fully controllable, capable of satisfying differentiated construction demands from global oil & gas projects.

Detailed Product Technical Introduction

Oil and gas transmission steel pipes serve as the core carrier for conveying crude oil and natural gas media. With superior strength, toughness, anti-corrosion and welding performance, they are widely adopted in land long-distance pipelines, subsea pipelines and oilfield gathering systems. We have years of deep accumulation in this industry, focusing on standardized steel pipe production, and all products meet international unified specifications to match various global oil & gas project requirements precisely. We follow API 5L, ISO 3183 and other international standards for whole-process production inspection, and can adjust all technical parameters flexibly to match special working conditions of individual projects for perfect on-site adaptability.

Core standard specifications: Pipe type: Straight seam submerged arc welded steel pipe. Mature forming and welding technology guarantees stable quality, ideal for long-distance high-pressure oil & gas trunk lines. Outer diameter range: 21.3mm to 2200mm, covering full small, medium and large diameter pipeline projects. Wall thickness range: 2.5mm to 60mm, wall thickness tolerance controlled within ±1%. Extra thick wall pipes can be customized according to transmission pressure, medium corrosiveness and buried laying environment. Length range: 6m–18.3m; standard factory lengths are 12m and 18m. Custom special lengths are available to reduce field welding workload on construction sites. Mechanical performance: Yield strength spans 290MPa–550MPa, tensile strength ≥415MPa to ≥625MPa, elongation ≥20%. Excellent low-temperature impact toughness enables construction in frigid cold regions. Connection options: Welded joint, threaded joint, flange joint. Thread and flange connections facilitate quick disassembly and installation to improve construction flexibility; welded joints are preferred for long-distance high-pressure pipelines to guarantee permanent sealing and structural strength.

Standard Customization Production Process

A standardized full-flow customization system is implemented to guarantee stable product quality and punctual delivery, allowing clients to track every production link transparently. Requirement communication: Clients submit project drawings, technical parameter standards, material grade requirements and delivery deadlines; our dedicated professional technical engineers take charge of one-to-one technical docking. Solution design: Conduct project feasibility analysis according to actual working conditions, formulate detailed customized manufacturing scheme, and revise repeatedly until client full satisfaction. Sample trial production: After client confirms the formal scheme, trial samples are produced for comprehensive mechanical & corrosion testing; samples will be delivered to client for acceptance only after all test items pass. Mass production: Start batch production upon client sample approval. All manufacturing procedures are executed under international standard specifications, and production progress is updated to clients in real time synchronously. Finished product inspection: Every finished pipe undergoes full-range performance testing, and official qualified inspection reports will be issued after passing all tests. Packaging & logistics: Provide tailored protective packaging as per client requirements, and select optimal shipping solutions based on delivery destination. Clients can track shipment logistics status online during transit to ensure on-time high-quality delivery.

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