Welded pipe is a commodity business where mills win on size coverage, weld consistency and cutting quality. Equipment for this industry must hold the seam at full speed and switch sizes fast, because pipe buyers order by standard, size list and delivery time.
Square and rectangular hollow sections serve columns, trusses and frames under ASTM A500 and EN 10219. Sizing stands hold corner quality and straightness on structural grades.
Water transmission and gas distribution pipe is ordered to API 5L and ASTM A53. Weld seam heat treatment and inline testing support these specifications.
Scaffolding and greenhouse tube runs in long repeated orders of standard diameters. Line speeds up to sixty meters per minute suit this volume business.
Fire sprinkler pipe follows ASTM A795, typically in red painted or galvanized finish. Consistent outside diameter keeps grooved couplings fitting without rework.
Furniture, fencing and conveyor rollers order thin-wall tube in mixed sizes. Quick roll change and recipe storage keep small batches economical.
Wuxi Tonghe Machinery manufactures cold roll forming equipment in Wuxi, China. Since 2011, the company has built CZ purlin machines, PV bracket lines, guardrail lines, cable tray lines and custom profile lines for customers in over 30 countries. The factory covers about 30,000 m² and employs 200+ staff, including a 50+ R&D team. Production is ISO9001 certified and products carry CE marking.
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Round pipe from fifty-nine to one hundred fifty-two millimeters and square or rectangular sections up to two hundred millimeters, with larger sizes tooled per requirement. One mill covers a family of sizes through roll-set changes.
Yes. Round tube welds directly on the mill, and square or rectangular sections are sized from round or formed directly. The route is chosen per your size list during configuration.
Wall thickness from one point five to four millimeters in carbon steel strip. The frame, welder power and drive are sized to your actual thickness range.
Mills are configured for API 5L, ASTM A53, ASTM A500, ASTM A795 and EN 10219 products, with weld treatment and testing arranged to match the standard.
Line speeds run from fifteen to sixty meters per minute depending on diameter and wall. Small thin-wall tube runs at the top of the range.
A solid-state high-frequency induction welder forges the seam from the strip edges without filler metal, followed by inline seam heat treatment.
Send your size list with outside diameters and wall thicknesses, material grades, target standard, monthly tonnage and plant voltage. We specify the mill configuration against these items.
A tube mill is a size-family investment. The mill frame, welder power and roll sets are all specified against your size list, so the catalog you plan to sell decides the machine. This guide covers the checks worth making.
One mill covers a family of diameters and walls, and stretching that family too far costs both speed and accuracy. List every size you plan to sell with wall thickness, and let the largest and heaviest size set the frame and drive. Sizes added later are roll sets, and new frames are expensive.
Two routes produce square and rectangular tube. Round-to-square welds a round tube and reshapes it in sizing stands, which suits mills that also sell round pipe. Direct square forms the final shape before welding and gives better corner quality on thick walls. Your product mix decides the route.
Weld consistency is the product in welded pipe. A solid-state high-frequency induction welder with inline seam heat treatment holds the seam at production speed, and the flying cold saw keeps ends clean for downstream threading and coupling. Ask to see weld samples from your thickness range before you order.
A mill at fifteen to sixty meters per minute covers wide tonnage differences between small thin-wall tube and heavy structural sizes. Work backward from your monthly target and size mix, and share both during quotation so the configuration matches your real orders.
Five items let us specify a tube mill correctly: the size list with outside diameters and wall thicknesses, material grades, target standard, monthly tonnage, and plant voltage. With these confirmed, the mill frame, welder and roll set plan are quoted against your production plan.
We're THRONCH, a direct factory in Wuxi, China, building custom roll forming lines for purlins, highway guardrail, cable tray, strut channel, and welded tube. Send us your profile drawing and get a line proposal within 24 hours.
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