Many project managers in Saudi Arabia search online for a reliable EFW pipe supplier in China. They often type queries like “ASTM A672 EFW pipe supplier China” or “EFW pipeline for Dammam projects”. Behind these short phrases, there are real pressures. Tight construction schedules, strict safety rules, and large investment decisions.
If you manage an oil, gas, or water pipeline, you know the risk. A poor weld seam can fail in the desert heat. A late shipment can stop an entire installation crew. So you want more than a competitive price. You want a manufacturer that understands standards, documents, and logistics to Dammam, Jubail, or Yanbu.
This article introduces Longma Group from Cangzhou, Hebei Province. The company focuses on ERW and LSAW pipes and supplies electric fusion welded (EFW) products for demanding projects. You will see how EFW pipes work and why Cangzhou has become a global pipeline hub. You will also learn how Longma Group supports Saudi buyers from quotation to delivery.
As you read, you may follow the same path as many overseas clients. First, you notice technical details that match your project. Then you compare them with what you see on other websites. You hesitate for a moment. Can this supplier really deliver? By the end, our goal is clear. You should know enough to trust Longma Group with an inquiry. Maybe it will be for your next electric fusion-welded (EFW) pipeline.
Electric fusion welded (EFW) Pipes for Saudi Arabia Pipeline Projects
Electric fusion welded (EFW) pipe uses an electric current to melt the edges of steel plate. The molten edges join under pressure and form a longitudinal weld seam. Compared with simple ERW pipe, EFW pipe handles higher pressure and thicker wall sections. The process fits high-pressure service at moderate temperatures, which is exactly the scope of ASTM A672.
ASTM A672 is a widely used standard for electric-fusion-welded steel pipe for high-pressure service. It covers grades like GRC65 and classes such as CL23 for different levels of testing. In Saudi Arabia, many water and oil transmission lines choose ASTM A672 EFW pipe. They need reliable thick wall sections for high internal pressure.
Saudi Arabia offers harsh working conditions for any pipeline. Daytime temperatures in the desert often rise above 45 degrees Celsius. Sandstorms, saline groundwater, and high UV exposure attack external coatings. Inside the line, operators handle sour gas, produced water, or crude oil with dissolved salts. Every weak point, especially the weld seam, faces long-term stress. Major Saudi operators and EPC contractors apply strict pipeline standards, comparable to those of leading international oil companies. That is why many Saudi pipeline designers specify electric fusion welded (EFW) pipe with strict testing.
When buyers compare options, they often ask how EFW differs from LSAW or ERW. LSAW pipe also uses submerged arc welding along the seam and usually suits large diameters. ERW pipe uses high-frequency induction and usually covers small to medium diameters with thinner walls. Electric fusion welded (EFW) pipes often sit in the middle. They allow heavy wall thickness like LSAW but follow ASTM pressure pipe standards like A672. For Saudi projects that transport steam, water injection, or medium-temperature hydrocarbons, this balance works very well.
When you check suppliers on Google, the product names may look similar. But quality comes from the details behind those short descriptions. For electric fusion welded (EFW) pipes, you should pay special attention to three areas. First, plate quality and steel grade must match your design pressure and temperature. Second, welding parameters and heat input must follow a qualified welding procedure specification. Third, non-destructive testing and hydrostatic tests must cover the full weld seam and pipe body. The next section explains how Longma Group handles these steps in Cangzhou’s strong industrial belt.
Longma Group: China electric fusion welded (EFW) Pipe Manufacturer Serving Saudi Arabia
Cangzhou City in Hebei Province sits on the Bohai Bay, south of Tianjin. For more than two decades, it has grown into one of China’s major steel pipe clusters. Many LSAW, ERW, and EFW mills gather here, together with coating plants and pipe fitting factories. The location gives strong logistics advantages for export. Trucks move finished pipe from Cangzhou to Tianjin and Huanghua ports in only a few hours. From there, container ships and break-bulk vessels sail regularly to Dammam Port in Saudi Arabia.
Longma Group started in 2003 inside this industrial belt and has grown with it. By the end of 2023, the company’s annual steel pipe output exceeded one million tons. Its main products include large-diameter, thick-walled longitudinal submerged arc welded (LSAW) pipes and electric resistance welded (ERW) pipes. Based on this strong welding background, Longma Group also supplies electric fusion welded (EFW) pipes for high-pressure service.
When overseas buyers ask about quality control, Longma engineers start with the steel plate. They source plate from established Chinese mills that can provide complete chemical and mechanical data. Before cutting, technicians verify heat numbers and traceability records. During the electric fusion welded (EFW) process, operators monitor current, voltage, and welding speed in real time. These records help repeat successful parameters when they produce many pipes for one project. After welding, each pipe goes through dimensional checks, visual inspection of the seam, and hydrostatic testing. Non-destructive tests such as ultrasonic inspection can also be arranged according to contract requirements.
Saudi Arabia pipeline contractors often need detailed documents before they release payment. Longma Group prepares mill test certificates, welding procedure summaries, and inspection reports in English. Project managers can match these files with ASTM A672 and project specifications during technical review. When clients invite third-party inspectors, Longma teams support site visits at the Cangzhou plant.
Because Cangzhou exports large volumes of line pipe each year, local logistics teams understand Middle East routes. For Saudi buyers, Longma Group usually arranges shipment through Tianjin or Qingdao to Dammam, Jubail, or Jeddah. Engineers coordinate packing frames, steel saddles, and anti-rust protection. That way, the electric fusion welded (EFW) pipes arrive in Saudi Arabia ready for installation.
All these details matter when you sit in Riyadh or Dammam and choose a supplier from a screen. You may never visit the factory, but your pipeline will depend on its welders and inspectors. Longma Group reduces that distance by showing capacity, industrial location, and real export records. The next part explains how this experience turns into practical support for your Saudi pipeline project.
From Cangzhou to Dammam: How Longma Group Supports Your electric fusion welded (EFW) Pipeline
Imagine you are preparing a new water transmission line between two Saudi cities. You need several kilometers of ASTM A672 GRC65 CL23 electric fusion welded (EFW) pipe with a specific diameter. You also need bends, fittings, and matching coating for buried service. You send an email with your preliminary data sheet and drawings.
At Longma Group, the sales and engineering teams review the design conditions together. They check design pressure, medium, temperature, corrosion allowance, and any special national standards. Based on these inputs, they propose a pipe size, grade, and class. They also estimate wall thickness using ASME and ASTM design rules, adding some reserve if you request it. In this early stage, you receive not only a price, but also a technical summary in clear language.
You probably compare this offer with quotes from other China EFW pipe suppliers. Some may give a lower unit price but less detail about welding procedures and inspection. At this point, hesitation is natural. To reduce doubts, Longma Group shares previous case data, including shipments to the Middle East. For example, a recent batch of ASTM A672 GRC65 CL23 EFW pipes left China for Dammam Port. The order covered nine pieces, each with diameter 1066.8 millimeters, wall thickness 14.27 millimeters, and length one meter. The total weight reached about 3.3 tons. Such small batches show how the company supports both project trials and full-scale lines.
Once you confirm the order, Longma Group prepares a production schedule and a packing list draft. You receive an estimated completion date plus the planned vessel window to Saudi Arabia. During production, your contact person sends progress photos from the workshop. You see plate cutting, edge preparation, the electric fusion welded (EFW) seam, and final hydrostatic testing. Short videos sometimes follow, which help your own quality team feel more confident. Before shipment, Longma staff measure each pipe again and mark heat numbers, grade, and size on the body. They place protective caps on the ends and apply anti-rust oil or wrap according to your specification.
After loading, the forwarder issues a bill of lading, and Longma Group sends all documents by email first. Original sets follow by courier if your bank needs them for a letter of credit. You receive the packing list, commercial invoice, mill test certificates, and inspection reports in one package. This paperwork may look routine, yet it protects your project during audits and later maintenance.
For most Saudi destinations, sea transit from North China to Dammam takes about three to four weeks. When you add production time, a typical order cycle runs between eight and twelve weeks from deposit. Planning early with the manufacturer helps you avoid costly idle time on the construction site. Even with clear steps like these, buyers still raise similar questions during early discussions. Two common topics appear again and again, so we will address them directly.
Send Your electric fusion welded (EFW) Inquiry to Longma Group
Google shows many China suppliers when you search for EFW pipes for Saudi Arabia. Some websites look modern but offer few technical details. Others show long lists of standards but little proof of real export experience.
Longma Group stands on a different base. It operates from Cangzhou, one of China’s main steel pipe industrial belts. The group’s annual steel pipe output already exceeds one million tons. The company focuses on LSAW and ERW pipes and extends this knowledge to electric fusion welded (EFW) products.
To start this process today, please email Longma Group at info@longma-group.com. Include your company name, project location in Saudi Arabia, and the phrase “EFW Inquiry” in the subject line. After you receive the first technical reply, you can decide calmly about a firm inquiry. That final step turns today’s online search into a real solution for your pipeline project.
References
- ASTM International. “ASTM A672 / A672M – Standard Specification for Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures.”
- American Petroleum Institute (API). “Specification 5L – Line Pipe.”
- Saudi Arabian Oil Company (Aramco). “Pipelines.”
- Cangzhou Municipal People’s Government. Information on local steel pipe and pipeline equipment industries.
- World Steel Association. “Steel Statistical Yearbook” and data on global steel pipe production.
