Bicycle Frame Processing
Raw materials are processed by laser cutting, pipe bending, arc stamping, flattening, marking and drilling. Frame accessories are welded by robotic arms, and full‑frame welding is done manually to cut labor costs.
Welcome to Haojun Vehicle Industry
Founded in 2011, Tianjin Haojun Electric Bicycle Co., Ltd. is located in Zhongtang Industrial Park, Binhai New Area, Tianjin. The factory covers over 50 mu with 25,000㎡ standardized workshops and convenient industrial supporting facilities.
We specialize in electric two‑wheeler & three‑wheeler frame manufacturing:
- Two‑wheeler frames: 4 manual 6 automatic lines, annual capacity 1.5 million units
- Three‑wheeler frames: 4 manual 4 automatic lines, annual capacity 500,000 units
With 150 staff, independent R&D & QC teams, hundreds of robotic welding machines and full‑set testing equipment, we are ISO9001‑certified and a strategic supplier for famous EV brands.
We provide cost‑effective frames. OEM & ODM are welcome.
Driven by consumption upgrading, the electric two‑wheeler and three‑wheeler industry is developing rapidly. Products are constantly updated and innovated toward higher performance and intelligence.
Electric vehicles feature convenient travel, low‑carbon environmental protection and cost‑effective advantages. They are widely applied in food delivery, patrol, scenic‑area operation and shared mobility. Meanwhile, growing overseas export demand creates broad market prospects for electric‑vehicle frames.
Main Business
1. Frame Material Preparation
Laser pipe cutting, pipe bending, flattening, arc punching, marking and drilling.
2. Frame Welding
3 automatic welding lines with Panasonic robots and 6 manual lines to ensure production capacity.
3. Finished‑product Inspection & Warehousing
Full inspection and polishing for finished frames; qualified products are stored in the finished‑goods warehouse.
Product Range
‑ Bicycle frame iron blank processing & welding
‑ Electric two‑wheeler & three‑wheeler frame iron blank processing & welding
‑ Electric‑vehicle frame and plastic‑part supporting
Product Introduction
Frame Processing
Raw materials go through laser cutting, pipe bending, arc stamping, flattening, marking and drilling. Three robotic lines build full two‑wheeler frames; on manual lines, accessories are robot‑welded and main‑frame welding is done by workers.
Frame & Plastic Parts Supporting
We conduct independent R&D and cooperate with top Tianjin design firms. We offer one‑stop services including design, mold‑making and blank production for frames, plastic parts, headlights and front‑&‑rear fenders, and supply complete sets to customers.