Haihao Group is proud to announce the successful delivery of two batches of ASME B36.10 seamless alloy steel pipes, manufactured in full compliance with the ASTM A335 P5 specification. This shipment marks another milestone in our commitment to delivering high-quality piping solutions for domestic high-temperature and high-pressure projects.
The order was placed by a long-term domestic client engaged in power generation and petrochemical construction. The steel pipes supplied are designed for use in high-temperature service, particularly in pressure systems requiring enhanced mechanical properties and corrosion resistance.

ASME B36.10 A335 P5 seamless pipes packed and ready for shipment
Delivered Pipe Specifications:
Standard: ASME B36.10
Material Grade: ASTM A335 P5 (5Cr-0.5Mo alloy steel)
Type: Seamless Pipes
Sizes:
14-inch (355.6mm OD)
20-inch (508mm OD)
Pre-Shipment Inspection & Quality Assurance
To ensure the highest product reliability, a third-party inspection agency was appointed by the client to oversee the entire quality verification process before dispatch. The following tests and inspections were successfully completed:
Chemical Composition Analysis – Verified conformity with ASTM A335 P5, including chromium content (Cr) within 4–6% as per standard requirements
Tensile Testing at Room Temperature – Confirmed adequate yield and tensile strength
Hardness Testing – Ensured materials meet required Brinell hardness limits
Visual and Surface Inspection – Pipe surfaces were inspected for defects, with all pipes coated in black paint for anti-rust protection
Each pipe was fitted with plastic end caps to prevent contamination and edge damage during transportation and storage.

ASME B36.10 A335 P5 seamless pipes loaded into container
Packaging & Logistics
The pipes were securely bundled and prepared for shipment according to customer requirements, ensuring safe delivery and ease of unloading at the job site. With Haihao’s professional logistics coordination, the two batches were dispatched on schedule and are en route to the client’s designated warehouse.
Why Choose Haihao Group?
Haihao Group is a trusted manufacturer and supplier of alloy steel seamless pipes, offering full traceability, third-party inspection compliance, and tailored surface protection. Our long-standing partnerships with domestic and international EPC companies reflect our ability to deliver consistent quality under tight timelines.
Looking for reliable A335 P5 seamless pipe suppliers in China?
Contact Haihao Group today for immediate support and competitive pricing. Email:sales@haihaogroup.com

