Explore our high-performance precision investment castings engineered to meet global standards.
Bangladesh's industrial landscape is undergoing a monumental shift. Traditionally driven by the Ready-Made Garment (RMG) sector, the nation is actively expanding its manufacturing horizons under national development roadmaps like "Vision 2041". Today, heavy engineering, shipbuilding in Narayanganj and Chittagong, automotive assembly, and massive power infrastructure projects form the new pillars of economic growth.
However, this diversification has created an unprecedented demand for high-complexity, high-durability metal parts. While Bangladesh boasts a robust light engineering sector, local foundries largely rely on traditional green sand casting methods. These methods struggle to meet the strict tolerances (ISO 8062), surface finishes (Ra 3.2μm), and chemical composition requirements demanded by modern machinery. Crucial applications—such as stainless steel pump impellers, corrosion-resistant valves, and heavy-duty structural hinges—often require imports to ensure operational safety.
This is where Dongguan SX Technology Co., Ltd. serves as a key partner. By bridging the gap between advanced Chinese manufacturing and Bangladeshi industrial needs, we provide high-precision lost wax investment casting services directly to Dhaka, Chittagong, Gazipur, and other industrial clusters, ensuring local firms access components engineered with extreme metallurgical accuracy.
Precision Casting Tolerance
Quality Certified Factory
Alloy & Steel Grades Available
Years of Industrial Expertise
How we achieve unparalleled dimensional accuracy and structural integrity.
Utilizing high-grade silica sol binders to form ultra-smooth ceramic shells. This process guarantees a superior surface finish (Ra 3.2–6.3 microns) and prevents micro-fissures in critical stainless steel components.
For interfaces requiring micron-level accuracy, our in-house 3-axis, 4-axis, and 5-axis CNC machining centers finish the castings, holding tolerances as tight as ±0.005mm on critical bore diameters.
Each heat of metal is tested using optical emission spectrometers (OES) before pouring. We provide full EN 10204 3.1 material traceability certificates for all stainless steel, carbon steel, and alloy runs.
Tooling Design & Injection
Ceramic Shell Building
Dewaxing & Sintering
Pouring & Solidification
Decoring & Shot Blasting
CNC Machining & QA
Dongguan SX Technology Co., Ltd. has very rich experience in precision casting, CNC machining, and assembly. Our products are used in machinery, automobiles, marine, ships, equipment, valves and pumps, electronic appliances, packaging, watches, construction, chemical industry, and other industries.
The most commonly used materials for investment casting at our factory are stainless steel (including AISI 304, 316, 316L, duplex steels) and carbon steel. Additionally, our CNC machining capabilities cover advanced alloys such as titanium alloy, stainless steel, carbon steel, aluminum alloy, copper alloy, cemented carbide, and more.
We have advanced manufacturing equipment and technology and are able to respond quickly to your needs. By combining traditional casting artistry with modern computer-aided design (CAD) and finite element analysis (FEA), we optimize gating systems to eliminate internal porosity, shrinkage, and micro-cracks before production begins.
A glimpse into our advanced manufacturing and casting processes.
We have professional testing equipment and professional QC personnel, and we adhere to strict tolerances and quality standards for the products we produce. Due to our insistence on strict quality requirements, we have been praised by many customers.
Quality is the cornerstone of the manufacturing industry. We firmly believe that only by controlling quality well can we survive, develop, and get better and better. Therefore, we have been working in this industry unremittingly since 2014 and continue to improve the company's team and improve the company's production capacity.
Our quality inspection process is multi-tiered:
Sourcing high-performance industrial castings requires a balance of quality, consistency, and cost-effectiveness. While buying locally in Dhaka or Chittagong may seem convenient, localized casting facilities often struggle with alloy consistency, scale-up capability, and complex structural tooling.
Partnering with Dongguan SX Technology offers distinct advantages:
We use CAD mold design combined with Magmasoft simulation software to prevent defects before pouring, significantly reducing development times for complex parts.
Unlike raw casting foundries, we deliver finished, ready-to-assemble parts by pairing our foundry with an advanced CNC machining shop.
Our established supply chain ensures stable access to specialized alloys, including duplex stainless steels and heat-resistant nickel alloys, at competitive price points.
Furthermore, our close proximity to Shenzhen and Guangzhou ports ensures streamlined logistics. Shipping to Chittagong Port typically takes 12–18 days, while air freight to Hazrat Shahjalal International Airport (Dhaka) delivers urgent spare parts within 3–5 days.
Explore our extensive range of custom casting options, tailored for heavy machinery, automotive, and marine environments.
Managing international logistics and quality compliance requires structured collaboration. At SX Technology, we optimize this workflow to offer a seamless import experience for our partners in Bangladesh.
Step 1: Engineering Assessment (DFM)
Our team analyzes your 2D and 3D technical drawings (STEP, IGES, or DWG formats) to identify stress points, draft angles, and casting thickness variations. This minimizes tool modification cycles.
Step 2: Prototyping & First Article Inspection (FAI)
Before high-volume casting runs, we utilize 3D-printed wax patterns to produce physical prototypes. This allows you to verify geometry and mechanical fitment without investing in permanent steel tooling up front.
Step 3: Tooling Manufacture & Pouring
We construct hard tooling using premium tool steel, capable of producing hundreds of thousands of cycles. Melt processes are monitored in real time, and chemical reports are generated for every heat batch.
Step 4: Surface Finishes & Post-Processing
Parts can be supplied as-cast, sandblasted, electropolished, passivation-treated, or fully machined. We accommodate custom requirements for wear resistance, chemical resistance, and aesthetic appearance.
Step 5: Shipping, Customs, & Port Operations
All consignments are packed in seaworthy, vacuum-sealed wooden crates to prevent moisture corrosion during sea transit. We provide all necessary export customs documentation, HS coding, bill of lading, and certificate of origin documents to assist your clearing agents at Chittagong Port or Dhaka Customs.
Clear, direct answers regarding specifications, materials, and importing logistics.
SX Machining