ASTM / ASME / EN Standard Seamless Steel Pipes for Oil & Gas, Boiler, Heat Exchanger & Industrial Applications
Available in TP304, TP316, Duplex & Alloy Steel Grades with Full Size Range, High Corrosion Resistance and Global Supply Capability.
Explore our full range of seamless stainless steel pipes and tubes including TP304, TP316, TP304L, and TP316L grades, as well as ASTM A312 and ASTM A213 compliant products for industrial, chemical, and high-temperature applications.
TP304 Stainless Steel Pipes & Tubes
TP316 Stainless Steel Pipes & Tubes
TP304L Stainless Steel Tubes & Pipes
TP316L Stainless Steel Pipes & Tubes
ASTM A312 / ASME SA312 TP304 Pipes & Tubes
ASTM A213 / ASME SA213 TP304 Stainless Steel Tubes & Pipes
ASTM A312 / ASME SA312 TP316 Stainless Steel Pipes & Tubes
ASTM A213 / ASME SA213 TP316 Stainless Steel Tubes & Pipes
Haomei Aluminum’s seamless steel pipe factory covers over 50,000 square meters of modern industrial facilities and is equipped with more than 20 advanced production lines, including precision rolling mills, cold rolling mills, and cold drawing machines.
Our production lines have an annual capacity of over 200,000 tons, and our products are exported to more than 80 countries and regions worldwide.
All of our seamless steel pipes comply with international standards such as ISO 9001, API 5L, ASTM, and EN, ensuring high-quality and reliable performance for our global customers.
Our seamless stainless steel pipes and tubes are certified by internationally recognized classification societies and comply with global standards such as PED, ABS, RINA, Lloyd’s Register, and China Classification Society, ensuring quality, safety, and reliability for industrial applications worldwide.
Norway Classification Society Certification
RINA Certification
American Classification Society Product Design Certification
American Classification Society Factory Certification
Lloyd's Classification Society Certification
China Classification Society Certification
Lloyd's Quality Management System Certification
PED Certification (Standards & Materials)
PED Certification (OD & Wall Thickness)
Explore the latest technical articles, material standards, and engineering guides about seamless stainless steel pipes and tubes, including ASTM and ASME specifications, welding materials, and manufacturing processes.
Our seamless stainless steel pipes and tubes undergo strict quality inspection and testing to ensure compliance with international standards such as ASTM, ASME, and ISO. Each process guarantees material integrity, mechanical performance, and corrosion resistance.
The seamless stainless steel pipe manufacturing process involves multiple precision stages including material inspection, hot processing, cold drawing, heat treatment, and final quality control to ensure durability, corrosion resistance, and dimensional accuracy.
Round Bar:
Raw stainless steel round bar as the starting material.
Inspection & Analysis:
Check chemical composition and mechanical properties.
Cut to Length:
Cut the bar into required lengths.
Centering:
Prepare the bar for precise machining.
Peeling:
Remove surface defects and oxide layers.
Heating:
Heat the material for plastic deformation.
Perforation:
Create internal holes for tube formation.
Size Inspection:
Ensure dimensions meet technical specifications.
Pickling:
Remove surface impurities using acid treatment.
Surface Inspection:
Check surface quality and finish.
Lubricating:
Apply lubricant for smoother processing.
Cold Drawing (Rolling):
Improve mechanical properties and dimensional accuracy.
Degreasing:
Remove oil and contaminants.
Annealing:
Heat treatment to improve ductility and relieve stress.
Straightening:
Ensure product straightness and alignment.
Cutting:
Final cutting to required dimensions.
Pickling & Passivation:
Enhance corrosion resistance and surface stability.
Final Inspection:
Comprehensive quality control and testing.
Marking:
Add identification and traceability markings.
Packing:
Secure packaging for transportation and export.
Shipping:
Deliver products to customers worldwide.
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