Hebei Shuangtai Mold Frame Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of adjustable base jack in China, featured by quality products and good service. Please rest assured to buy discount adjustable base jack from our factory. We also accept customized orders.
Product Information
Manufacturer Profile
We are a professional metal stamping and scaffolding accessory manufacturer with more than ten‑year manufacturing experience. The workshop is equipped with integrated production lines for cutting, threading, welding and hot‑dip galvanizing. Every batch undergoes dimension inspection and load sampling test before delivery. We maintain sufficient component inventory and deliver integrated service for global construction purchasers without intermediate traders
Product Overview
The adjustable base jack, also known as scaffolding screw base jack, is an indispensable bottom supporting fitting for modular scaffolding systems. Cooperated with ringlock uprights, cuplock standards and other vertical tubes, it transfers the whole weight of scaffolding frame and upper construction load to the ground foundation. This hardware part mainly consists of base plate, threaded screw rod and adjustment nut. Most finished products adopt hot‑dip galvanized anti‑corrosion treatment. It is placed under the bottom‑end of scaffolding upright, solving height deviation caused by rugged site ground, foundation settlement or ground height difference. Matched with U‑head jack, they form a complete height‑adjusting group for formwork bracing projects
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Multiple mainstream sizes are available to match different load‑level scaffolding systems. Screw rod outer diameter covers 34mm, 38mm, 40mm options; effective adjustable length ranges from 250mm up to 600mm. Square base plate commonly adopts 120×120mm, 150×150‑mm thickened steel plate. Thicker base plates are selected for heavy‑duty working condition matching Φ60 ringlock scaffolding for bridge support. Thin‑spec base jack fits Φ48 ringlock and cuplock scaffolding for general building construction. Thread precision is strictly controlled to guarantee smooth rotating of adjusting nut. Buyers may pick proper specifications according to upright tube size, expected bearing pressure and reserved adjusting stroke on construction sites
Product Advantages
First of all, prominent height‑adjusting capacity helps construction crews offset ground height difference flexibly, removing tedious ground leveling work in advance
Secondly, hot‑dip galvanized processing effectively prevents rust erosion in open‑air, damp and coastal sites, extending service cycle and lowering replacement frequency
Thirdly, thickened base plate increases contact area with ground, dispersing point pressure and reducing the risk of sinking into soft soil foundation
Fine‑tuned trapezoidal thread brings large bearing capacity and anti‑skid performance; the nut will not slip under long‑time static compression
All key welding joints are completed by automatic welding equipment to avoid welding‑point crack hidden danger under heavy load
Placed under scaffolding vertical standards, it bears and transfers dead load plus live construction load toward ground foundation
A: MOQ is 5 tons. Mixed‑loading with other scaffolding accessories in one container is acceptable for combined procurement.
A: Yes. Please offer detailed technical parameters including screw diameter, adjustment range and base‑plate size. Our technical team will evaluate manufacturability and quote accordingly.
A: Thread blockage is mostly induced by sediment, cement mortar or rust getting into thread gap. We suggest applying anti‑rust grease before site deployment and avoiding long‑term direct exposure in muddy environment. Manufacturing‑caused thread defects fall within our warranty scope.
A: Our sales team will reply valid quotation within 24 working hours. Providing project load requirement helps us recommend more suitable specifications.
A: Mill test certificates for raw steel can be supplied. Third‑party inspection reports can be arranged at purchaser's expense if required.
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