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HFW and SSAW Tube & Pipe Mill
Manufacturer, Φ10 to Φ1620 mm

Two welding technologies, one factory.
Get a QuoteView Production Lines
  • Rolls designed and machined
    in our own CNC shop
  • Installed and commissioned
    on site by our engineers
  • Complete lines or single units
A MANUFACTURER, NOT A TRADING COMPANY
12+YEARSBuilding tube mills in Zanhuang, Hebei
25COUNTRIESWhere our lines have been delivered
20ENGINEERSAveraging 20 years’ experience
12HFW MODELSFrom HG32 to HG630
Get a QuoteAbout Tengtian
ONE SUPPLIER, TEN PRODUCT LINES

From Steel Coil to Finished
Pipe and Sections

Get a Quote

How We Build Them

Every line is built in our own plant in Zanhuang, Hebei — including the forming rolls and key wear parts, machined on our own CNC equipment, so spare-part supply does not depend on a third-party shop.

Tube mill line with its control cabinetsRolls and Stands Cut in Our Own CNC ShopRoll pass design and CNC machining of forming rolls and stands, done in our own shop.See How → Steel strip being fed towards the forming section of a spiral millThree Rolls Set the Forming AngleΦ219–1620 mm × 5–16 mm. Bore changed by forming angle, not by changing rolls.See How → Forming rolls and stands of a roll forming line, seen along the lineFormed Cold, Step by StepC, Z and Ω purlin and open sections, with tooling and die design done in-house.See How → Slit strips leaving the knife shafts of a steel slitterKnives and Spacers Set to Strip ThicknessCoil preparation upstream of any mill — ±0.2 mm width, coils up to 32 t.See How →

See the Lines Running

Filmed in our own workshop during production and factory acceptance — not rendered, not stock footage.

Automatic Tube Mill 150×150 mm — PLC Full-AutoAutomatic Tube Mill 150×150 mm — PLC Full-AutoSSAW Spiral Welded Pipe Mill — Φ219–1620 mmSSAW Spiral Welded Pipe Mill — Φ219–1620 mmHG630 HFW Pipe Mill — O.D. 325–630 mmHG630 HFW Pipe Mill — O.D. 325–630 mmCut-to-Length Line — Coil to Sheet, up to 32 t CoilCut-to-Length Line — Coil to Sheet, up to 32 t CoilH-Beam Production Line — GOST R 58966-2020H-Beam Production Line — GOST R 58966-2020Coil Slitting Line — ±0.2 mm WidthCoil Slitting Line — ±0.2 mm Width

Watch All 24 Line Videos →

Tengtian welded pipe equipment works in Zanhuang, Hebei

A Manufacturer, Not a Trading Company

Tengtian has built welded pipe and tube mills at its own works in Zanhuang, Hebei since 2014. Roll design, CNC machining of rolls and stands, mechanical assembly and electrical integration all happen on our own floor, in our own machining centre — you are buying from the people who cut the metal. How a line is scoped, built and accepted is set out under tube mill manufacturer.

That floor covers the whole diameter range. High-frequency welded lines from Φ10 mm to Φ630 mm, spiral (SSAW) lines from Φ219 mm to Φ1620 mm, round, square and rectangular sections from the same mills. W, FFX and FF forming are all available, and every roll pass is designed in-house.

An in-house technology innovation centre, opened in 2017, is where new pass designs are worked out by the design office’s industrial design engineers.

2014Manufacturing since
10 engineersIndustrial design team, all with a master’s degree or higher
Φ10 – 1620 mmFull range, HFW and SSAW
ISO 9001 · CEQuality system and CE marking
More about our works and team →

Find Your Line by Target Pipe Diameter (Φ10–1620 mm)

Selection starts with one number: the largest outside diameter the plant intends to sell. Pick the step that covers it — each one opens the full specification for that line.

Above Φ630 mm the route changes: an SSAW spiral welded pipe mill covers Φ219–1620 mm on one machine, by changing the forming angle rather than the roll set.

HG32Φ10–32 mmHG50Φ16–50.8 mmHG76Φ25–76 mmHG89Φ32–89 mmHG114Φ45–114 mmHG165Φ60–165 mmHG219Φ114–219 mmHG273Φ114–273 mmHG325Φ165–325 mmHG426Φ165–426 mmHG508Φ219–508 mmHG630Φ325–630 mm

Two Welding Technologies, One Supplier: HFW Longitudinal and SSAW Spiral

Tengtian builds two families of welded pipe lines: high-frequency longitudinal (HFW) mills for Φ10–630 mm and spiral submerged-arc (SSAW) mills for Φ219–1620 mm. HFW is continuous and fast, which suits smaller diameters at volume; SSAW changes diameter by changing the forming angle rather than the rolls, which suits large-diameter pipe in medium batches. A plant that starts with furniture tube and later moves into water or gas transmission pipe keeps the same supplier, control philosophy and spare-part channel.

Built For: Distributors, Integrators, Line-Pipe Mills and Section Plants

Distributors and regional agents get tiered configurations they can quote at more than one price point; system integrators get a whole-line scope with no gaps between units; line-pipe mills get the API SPEC 5L inspection chain; section plants get H-beam lines built to GOST R 58966-2020. Each group has its own programme under distributors and integrators.

Certificates Held

ISO 9001, CE for welded pipe and cold roll forming equipment, and the patent and inspection records behind them. Full copies are available on request.

See Certificates and Qualifications →

Before You Specify a Line

Process, standards and running numbers in one place: the background for specifying a line.

Welded Pipe GuideHow a tube mill works, ERW explained, and seamless versus welded comparedKnowledge BaseStandards, selection, output and wear — the reference material in one placeTube & Pipe Mill GlossaryProcess terms in plain English, from accumulator to sizing stand

Get a Quote — Tell Us Three Things

Target outside diameter, wall thickness, required output — send those and you get a line sizing and a tiered configuration with the scope of supply written out.

Send Your Three Numbers →

Send Your Enquiry

Tell us the pipe outside-diameter range, the wall thickness and the output you need. An engineer reads every enquiry — it does not land in a general sales inbox.

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