Jingfang® Adjustable Steel Props — Post-Weld Galvanized, EN 1065 Tested, Built to Outlast
Linyi, Shandong — June 2026 — As global construction demands rise, the reliability of temporary shoring equipment has never been more critical. Yet a persistent problem plagues the market: too many steel props begin to rust within months — not on the tube body, but at the welds, where the zinc coating was destroyed during fabrication.
Linyi Jingfang Engineering Materials Co., Ltd. is addressing this issue with a fundamental shift in manufacturing logic: weld first, then galvanize.
"Most manufacturers use pre-galvanized steel tube to save costs," explains a senior engineer at Jingfang. "They cut it, weld it, and spray a thin layer of paint over the welds. From the outside, it looks fine. But every cut and weld joint is exposed bare steel. Rust starts there — and spreads."
Jingfang's approach is the opposite. Every adjustable steel prop is fully assembled and welded before being immersed in molten zinc. This post-weld hot-dip galvanizing ensures 360° zinc coverage — the tube body, the inner wall, and critically, every weld seam — are all encapsulated in a continuous protective layer.
Beyond Galvanizing: Eight Exclusive Advantages
The company's commitment to durability extends across every component:
Alkaline Zinc Plating with 70%+ Pure Zinc Bath — NSS salt spray tested for over 72 hours, producing a dense, bright finish that stays tarnish-free for years. This stands in stark contrast to the acidic zinc plating common on low-cost props, which typically achieves less than 24 hours in the same test.
Full Penetration Welding — Every base plate is welded to GB 50661-2011 standards, with a visible weld bead that serves as proof of complete fusion. No superficial welds. No hidden voids.
Reinforced Weld Cap on Fork Heads — The Four-Way Fork Head uses a non-parallel welding technique with an intentionally retained weld cap, significantly enhancing tear resistance at the joint. "We refuse to grind down the weld just for a smooth look," the engineer notes. "Grinding is often how weak welds are disguised."
Grade 8.8 High-Strength Nuts — With a tensile strength of 800 MPa, far exceeding the Grade 4.8 hardware (400 MPa) commonly found on inferior alternatives.
Strict Wall Thickness Tolerance — Deviation controlled within ±0.1mm, weight deviation within ±0.5%. "Many manufacturers default to negative tolerance — claiming 2.0mm but delivering 1.8mm. We deliver exactly what we promise."
Acrylic Enamel Finish — 5 to 7 years of colorfast, tarnish-free performance, replacing the cheap water-based paint that fades within hours of sun exposure.
28+ Years of Engineering Expertise — Every component configuration is matched to project requirements by an experienced engineering team.
EN 1065 Tested by SGS
The entire system has been tested to EN 1065:1998, the European standard for adjustable telescopic steel props. SGS testing covers multiple heights across the full adjustment range, including maximum extension — the most critical load condition. The company also holds SGS EN 13377:2002 certification for its H20 timber beams, demonstrating a consistent commitment to third-party verified quality.
Available Configurations
Light Duty A: 48mm outer tube, 1.6–2.9m height range, painted finish
Light Duty B: 56mm outer tube, 1.6–2.9m height range, painted finish
Heavy Duty: 60mm outer tube, 1.8–3.2m height range, galvanized finish
Accessories: U-Head Jacks, 4-Way Fork Heads, Tripods
All types are available with OEM customization on tube diameter, wall thickness, height range, and surface finish.
Complete Shoring from One Supplier
Jingfang's product range also includes UPVC plastic formwork (100% virgin material, 50+ reuses), H20 timber beams (Russian Spruce, Phenolic Glue, EN 13377 certified), and scaffolding systems (Frame, T-Frame, Ringlock). This makes the company a single-source supplier for complete formwork and shoring packages.
"We're not competing on price with manufacturers who cut material costs," the company states. "We're competing on total value. When a prop stays rust-free for years instead of months, and every weld holds under pressure, the real cost savings become clear over the life of the product."
About Linyi Jingfang Engineering Materials Co., Ltd.
Linyi Jingfang is a system supplier integrating R&D, manufacturing, sales, and export of UPVC plastic formwork, H20 timber beams, adjustable steel props, and scaffolding systems. Headquartered in Linyi, Shandong Province, China, the company serves construction enterprises worldwide with high-reuse, high-strength, and cost-effective concrete forming solutions.
Contact:
📧 info@sdjingfang.com
📞 +86 178 0611 2299 (WhatsApp/Viber/WeChat)
🌐 www.sdjingfang.com