Corporate Profile

TJ Steel Rope is the export name of Jiangsu Tongjiang New Materials Technology Co., Ltd., a wire rope manufacturer in Nantong, Jiangsu Province. The company has been making steel wire rope since 1987 and took its current legal name in 2017. About 80 people work at the 33,536 m² plant on Tongda Road, across manufacturing, technical and sales.

The range covers most of what a lifting or drilling operation needs: general purpose 6- and 8-strand line-contact rope, compacted-strand and rotation-resistant constructions, and specialised mining and API-standard drilling rope. Rope goes to construction machinery OEMs, port and terminal operators, offshore and marine contractors, oil and gas operators, mining companies and distributors, in Southeast Asia, the Middle East, North America and Australia, and to more than twenty provinces inside China.

Company details at a glance


Trading name	TJ Steel Rope
Legal entity	Jiangsu Tongjiang New Materials Technology Co., Ltd. (江苏通江新材料科技有限公司)
Headquarters	No. 99 Tongda Road, Nantong Economic & Technological Development Zone, Nantong, Jiangsu Province, China
Founded	1987
Renamed	2017
Employees	Around 80
Production area	33,536 m²
Annual capacity	30,000 tons
Industry	Steel wire rope manufacturing
Export markets	Southeast Asia, Middle East, North America, Australia

Manufacturing Capability

The whole production sequence happens in Nantong: wire drawing, strand twisting, rope closing. Sixty-five major machines, one site, nothing subcontracted. There is also an independent R&D division with its own experimental and test facilities, including torque and rotation test equipment built in-house and a fatigue qualification procedure for crane rope.

Nantong is a coastal development city on the Yangtze, just south of the Sutong Bridge and close to both the airport and the Xinchang Railway. Locals call the region "Northern Shanghai". For an overseas buyer it means a factory visit is straightforward and containers do not travel far to reach a port.

Every rope is tensile tested against its declared minimum breaking force before it ships. Lifting and rotation-resistant products additionally go through a formal torque and rotation check on Tongjiang's own equipment.

Standard catalog constructions usually come out of stock. The factory keeps around 4,000 tons of finished rope year round for exactly that reason. Custom and OEM orders (non-standard constructions, diameters, cores, coatings, or buyer-specified lengths and marking) are scheduled against production load, and the lead time is confirmed with the quote.

Quality and after-sales

Tongjiang holds four management-system certifications from CICC: ISO 9001:2015 for quality, ISO 14001:2015 for environment, ISO 45001:2018 for occupational health and safety, and ISO 50001:2018 for energy. The GB/T equivalents are held alongside them.

For marine work there is a Certificate of Works Approval from China Classification Society, covering single-layer rope from 10 mm to 80 mm and rotation-resistant rope from 10 mm to 52 mm, at grades from 1570 to 2160 N/mm². CCS audits the factory unannounced once a year.

There is also a CE technical-file verification from Ente Certificazione Macchine in Italy, confirming that documentation for rope from 6 mm to 80 mm complies with EN ISO 12100 and EN 12385-1 under the Machinery Directive. It assesses the documentation, not the product, and it accompanies Tongjiang's own EC Declaration of Conformity instead of replacing it.

Rope is manufactured to EN 12385, ASTM A1023, YB/T 5359 and GB/T 8918, with API RP 9A constructions for oil and gas.

Shipments can carry mill certificates, quality certification documents and third-party test or inspection reports where a buyer needs them. Technical data sheets and breaking force tables are available for every construction, which is usually what an engineering team asks for first.

Export markets

Southeast Asia. Construction machinery, ports and marine lifting, which matches where the region's heavy-equipment demand sits.

Middle East. Oil and gas and offshore platform work first, ports and construction machinery after, supported by API RP 9A drilling rope and CCS approved marine product.

North America. Mining, construction machinery and oil and gas, served by the shovel, dragline and API-standard drilling lines.

Australia. Mostly mining. Electric shovel, dragline and bucket-wheel excavator rope for large surface operations.

Inside China, Tongjiang sells across more than twenty provinces.

Distributors and partners

Tongjiang works with distributors, trading companies and agents across its four priority export regions. A local partner brings market reach, language and after-sales proximity that direct export from Nantong cannot match on its own.

If you want to discuss distribution or agency in your market, see the Distributor Program page or contact the sales team.

Frequently asked questions

A manufacturer. TJ Steel Rope is the export name of Jiangsu Tongjiang New Materials Technology Co., Ltd., which runs its own 33,536 m² plant in Nantong. Every rope is made in-house from wire drawing through to rope closing, across 65 major machines, with an independent R&D division doing its own testing and fatigue qualification. The company does not resell rope made by anyone else. If you are evaluating a significant or OEM order, a factory visit can be arranged so you can confirm that yourself.

No. 99 Tongda Road, Nantong Economic & Technological Development Zone, Jiangsu. Nantong is a coastal city on the Yangtze, close to the Sutong Bridge, the airport and the Xinchang Railway, so getting there is not difficult. Visits can be arranged for buyers assessing production orders. Contact the sales team and they will put together an itinerary.

Standard terms are a 30% deposit by telegraphic transfer with the balance before shipment. Some destination countries require 70% up front, balance before shipment. CIF is the standard trade term, and other Incoterms can be agreed. If you are buying under a defined procurement structure, government-funded or institutional work for instance, check compatibility with the sales team before you place a formal order.

Yes. Custom construction, diameter, core type (fiber, steel or plastic-injected steel), surface coating, lay type and direction, length and marking. Products follow a naming convention, for example TG 40mm 6x36WS IWRC 1770 U sZ, which encodes diameter, construction, core, grade, finish and lay direction so there is no ambiguity about what was ordered. Guy wire and other application-specific rope can be made from your own engineering drawings.

Selection is assessed on strength, rotation resistance, fatigue resistance, wear and friction resistance, corrosion resistance and expected extension. Lifting and rotation-resistant products are tested on Tongjiang's own torque and rotation equipment as part of a formal verification procedure, and fatigue test data is available where the application justifies it. Every order goes through a technical checklist before production, covering application, length and tolerance, diameter, construction, grade, core, coating, lay, minimum breaking force, end finish, packaging, marking, and any third-party certification you require. It is there to make sure the rope that arrives matches the conditions it will actually work in.