How & What

Full Production, Machining & Inspection Process

Full introduction to our product portfolio and integrated manufacturing line: billet piercing, hot rolling, cold drawing, heat treatment, cutting/bending/honing, galvanizing/3PE coating and strict batch inspection before export delivery.

This page fully introduces our complete product range and integrated one-stop manufacturing system. We produce carbon steel, low alloy, heat-resistant Cr-Mo alloy and stainless seamless pipes covering all industrial sectors including infrastructure, automotive, mining, plant engineering and chemical process industries. Our full production workflow runs from raw solid steel billet piercing, hot rolling, precision cold drawing, standardized heat treatment, custom secondary machining, anti-corrosion surface coating to full batch material and non-destructive inspection. Every finished pipe complies with GB, ASTM, EN and DIN international standards to meet strict EPC tender and third-party supervision requirements worldwide.

Unlike small workshops that only carry out single processing, our factory owns full-chain production workshops: billet workshop, hot rolling workshop, cold drawn precision tube workshop, heat treatment furnace workshop, machining center, hot-dip galvanizing & 3PE anti-corrosion coating production line and independent quality testing laboratory. We can independently control every production link to guarantee stable dimensional tolerance, uniform mechanical performance and reliable anti-corrosion quality for all pipe orders.

Technical Articles & Product Guides

Wear-Resistant Ceramic & Cast Basalt Piping

Specialty Wear-Resistant Materials

Pipe Manufacturing & Forming Processes

Heat Transfer & Finned Tubes

Expansion Joints & Alloy Materials

Standards, Codes & Installation

Frequently Asked Questions
Carbon steel, low alloy structural tube, Cr-Mo high temperature alloy pipe, 304/316L stainless tube, plus hot-dip galvanized and 3PE coated anti-corrosion finished pipes with full custom machining service.
We own complete integrated workshops including billet piercing, hot rolling, cold drawing, heat treatment, machining, galvanizing, 3PE coating and independent testing lab, all processing finished in-house.
BK cold hard, BKW stress relieved, GBK fully annealed, NBK normalized, selected according to customer bending, welding and low-temperature service requirements.
Full hot-dip galvanizing line with controllable 60~200μm zinc coating thickness and 3PE three-layer polyethylene anti-corrosion coating line for buried pipelines.
Precision cutting, end chamfering, hot/cold bending, internal honing, stainless mirror polishing, external threading, drilling and post-forming stress relief heat treatment.
PMI chemical spectrum test, tensile/impact/hardness mechanical test, 100% UT+MT+PT triple NDT, hydrostatic pressure test and coating thickness measurement for anti-corrosion pipes.
Official EN 10204 3.1/3.2 MTC material test certificates containing full chemical, mechanical, NDT and dimensional inspection records per batch.
Yes, our flexible integrated production line supports small sample trial production as well as mass bulk container orders for global EPC contractors.
Hot Products

【H】 Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

【H】 Cast basalt lined steel pipe

Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.

【H】 Ceramic Tile Lined Pipes

Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.

【H】 Rare earth alloy wear-resistant pipe

The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.

【H】 Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.

【H】 ASTM A213 T91 Alloy Tube

The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.

The White Glove Service You Deserve

When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.

application

Materials delivered on-time and at a fair price

application

No delays in production or manufacturing process

application

Meet engineering specifications to ensure top quality

application

World-class customer service ready to help