ACEI Screw Plug Inc.was established to produce non-standard fasteners and CNC machined parts. Our goal is to be your long-term, professional partner, offering comprehensive solutions for non-standard parts.

We specialize in non-standard CNC-machined parts made from cold-formed or hot-forged rough casts. ACEI is a leading manufacturer of screw plugs for industries such as pipeline, heat exchangers, hydraulic & pneumatic systems, machinery, and vehicles. Our product range includes standard plugs according to DIN standards (DIN 906, DIN 908, DIN 909, DIN 910, DIN 5586, and DIN 7604), as well as shoulder plugs for heat exchangers made from ASTM SA105, A350 LF2, and A479. We also produce various non-standard plugs based on customer drawings. Additionally, we manufacture ball bolts, hanger bolts, eye bolts, pins & shafts, gear wheels & gear shafts, inserts, couplings, and more.

With a focus on reliable quality at competitive prices, ACEI consistently develops and produces these products, making us the most advantageous and optimized supplier in the market. We have received favorable feedback from both domestic and international buyers—not only for our quality and cost but also for the wide variety of products we offer.

Our services include cold forming, hot forging, CNC machining, turning, and threading, with a particular focus on custom-made, non-standard metal products. We utilize mature, optimized production efficiency and maintain a strict quality control system. Whether the material is steel, stainless steel, brass, or aluminum, we source materials according to strict standards from reliable suppliers at the best prices. Additionally, we have extensive experience in subsequent processes, such as heat treatment and surface finishing.

Thanks to our passionate, professional team, we typically respond to customer inquiries within 24 hours, providing detailed quotations, counter-drawings, mold-making plans, sample production schedules, and quality control plans. Our team stays updated daily on the latest exchange rates, metal prices in local markets, the Shanghai Metal Exchange, and the London Metal Exchange (LME). We have in-depth knowledge of metal processing costs, including labor, machinery, shift output, mold and fixture costs, material wastage, and the latest recycled material prices. This enables us to save every possible cent for our customers.

At ACEI, we strive to create value for our customers by understanding and addressing their concerns and ensuring their benefits. We take pride in meeting our customers' demands, regardless of the quantity or complexity of the order. We aim to be your trusted expert in non-standard parts.