PETROL STEEL CO., LTD. is a leading manufacturer and stockist of large-diameter steel pipes in China, specializing in hot-expanded seamless steel pipes and heavy-wall seamless pipes for demanding industrial and infrastructure applications. With advanced hot-expansion equipment and a production capacity of up to 50,000 tonnes per month, we supply large OD steel pipes for oil & gas, petrochemical, water infrastructure, shipbuilding, chemical, and industrial projects worldwide.
Hot-Expanded Seamless Steel Pipe Production Capacity
Our large-diameter steel pipe production facilities are equipped to support high-volume and project-specific requirements, including:
- 5 sets of advanced hot-expansion machinery
- Industrial straightening machines
- Annealing and heat-treatment equipment
- Production capacity of up to 50,000 tonnes per month
- Large-diameter and heavy-wall seamless pipe production capabilities
Large Diameter Steel Pipe Size Range
Our hot-expanded seamless steel pipes are available in a broad range of sizes to meet demanding pipeline and industrial requirements:
- Outer Diameter (OD): 12″–47″ (323.9–1,200 mm)
- Wall Thickness: SCH 10–SCH 100 (8–60 mm)
- Length: 1–12 metres
Custom sizes and specifications can be considered according to project requirements.
Applications of Large Diameter Steel Pipes
Hot-expanded seamless steel pipes are designed for applications requiring large diameters, substantial wall thickness, and reliable performance. They are widely used for the transportation of petroleum, natural gas, coal gas, water, and other fluid or solid materials.
Typical applications include:
- Oil & gas transmission pipelines
- Natural gas and petroleum pipelines
- Water transmission and aqueduct construction
- Chemical and fertilizer equipment
- Shipbuilding and marine applications
- Industrial piping systems
- Gas transmission pipelines
- Oil transportation pipelines
- Drainage and sewage infrastructure
- Large-scale infrastructure projects
Packing & Delivery
Large-diameter steel pipes are supplied using bundled and seaworthy export packing, with packing arrangements customized according to pipe dimensions, transportation requirements, and customer specifications.
For project requirements, PETROL STEEL can coordinate the supply of large-diameter hot-expanded seamless pipes according to specified sizes, wall thicknesses, standards, grades, testing requirements, quantities, and delivery requirements.
Choose PETROL STEEL for Your Large Diameter & Heavy Wall Steel Pipe Projects
With more than 15 years of experience in export, professional engineering support, strict quality management, and reliable international logistics coordination, PETROL STEEL provides reliable large-diameter, heavy-wall & infrastructure steel pipe solutions for global EPC contractors, engineering companies, and project owners.
If your project needs qualified pipeline materials, accurate documentation, and a supplier that understands international engineering requirements, PETROL STEEL is ready to provide professional support from inquiry to final delivery.
PETROL STEEL is ready to support your project with a professional supply solution if you need API 5L large-diameter line pipe, large-diameter seamless steel pipe, hot expanded seamless pipe, or customized large OD steel pipe.
Contact PETROL STEEL for your required size, material grade, standard, quantity, and delivery destination. Our experienced team will offer a practical quotation and supply proposal for your project.
https://www.petrolsteel.com/Contact-us
Tel/Fax: +86 10 8599 9168
Cel/WhatsApp/WeChat: 0086 209 0035 7871
Email: sales@petrolsteel.com, jackywinn@foxmail.com







