Saudi Arabia Onshore Oil & Gas Trunk Pipeline Project

Project Overview

This long-distance onshore crude oil & associated gas transmission trunk pipeline project is undertaken by a reputable local EPC contractor in Saudi Arabia.The pipeline crosses vast desert areas with huge temperature differences day and night and highly corrosive soil, which sets strict requirements on pressure resistance, anti-corrosion performance and dimensional tolerance of steel pipes.After multiple sample tests and factory audits, the contractor selected Pengyuan Steel as the primary pipe supplier.

Project Challenges

1. Buried underground in desert, pipes must resist electrochemical soil corrosion;

2. Long-term high-pressure fluid transportation requires stable mechanical performance and excellent weldability;

3. Tight construction schedule, requiring phased delivery to match site installation;

4. All products must comply with API specifications, supplied with EN 10204 3.1 MTC and support third-party SGS inspection.

Supplied Products

Product: API 5L Gr.B PSL2 seamless steel pipes with 3PE external anti-corrosion coatingSize: OD219mm ~ OD508mm, wall thickness 6.0~12.7mmTotal quantity: 1,680 metric tonsStandards: API 5L, GB/T9711

Pengyuan Solution

1. Custom seamless pipes manufactured strictly according to customer drawings, precise OD & WT tolerance to guarantee on-site welding;

2. Automated 3PE coating production, coating thickness ≥2.2mm for underground desert service;

3. 100% hydrostatic test, eddy current test and ultrasonic non-destructive testing during production to ensure safety;

4. Production and sea shipment arranged in four batches to follow the construction timeline;

5. Complete set of official English mill test reports and inspection documents provided, engineers available remotely to assist third-party inspection.

Project Result

All steel pipes arrived at Dammam Port on schedule and successfully passed joint inspection by the end client and third-party surveyors.The pipeline has been fully commissioned and operates stably without leakage or corrosion failures.Reliable product quality and full-cycle technical support secured repeated cooperation on the Phase II pipeline project.