Qingdao Sande Technology Co., LTD
| Payment Terms | D/P,T/T,Western Union |
| Supply Ability | 10000PCS/month |
| Delivery Time | 30 days |
| Packaging Details | Wooden case |
| Materials | Hot dip galvanized steel |
| Feature | High Precision |
| Color | Silver |
| Packingour Request | wooden box |
| Lead Time | 30-45 days |
| Dimensions | depends on customer's requirements |
| Durability | long-lasting |
| Package | Wooden box |
| Brand Name | Qingdao Sande Tech Co.,Ltd |
| Model Number | OEM |
| Certification | ISO, DIN, AISI, ASTM, BS, JIS, etc. |
| Place of Origin | Qingdao, China |
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Product Specification
| Payment Terms | D/P,T/T,Western Union | Supply Ability | 10000PCS/month |
| Delivery Time | 30 days | Packaging Details | Wooden case |
| Materials | Hot dip galvanized steel | Feature | High Precision |
| Color | Silver | Packingour Request | wooden box |
| Lead Time | 30-45 days | Dimensions | depends on customer's requirements |
| Durability | long-lasting | Package | Wooden box |
| Brand Name | Qingdao Sande Tech Co.,Ltd | Model Number | OEM |
| Certification | ISO, DIN, AISI, ASTM, BS, JIS, etc. | Place of Origin | Qingdao, China |
| High Light | CNC machined stainless steel tubes ，welding tubes for air detection ，custom stainless steel machining parts | ||
Custom CNC - Machined Stainless Steel Welding Tubes For Air Detection Components
Overview
Our precision-engineered stainless steel tubes are specifically designed and manufactured for integration into critical air detection systems. Through advanced CNC machining processes, we deliver custom tubular components that meet exact specifications for dimensional tolerances, surface finish, and weldability. These tubes are the essential foundation for building reliable, leak-proof, and durable air sampling, pneumatic conveyance, and sensor housing assemblies.
Ultra-Precision CNC Machining: Each tube is machined to exacting tolerances (±0.01mm or as specified), ensuring perfect fitment and alignment within your assembly. This eliminates flow turbulence, preserves sample integrity, and prevents leaks in critical air paths.
Superior Material Properties: Fabricated from high-grade stainless steel (304, 316, or 316L upon request), our tubes offer outstanding corrosion resistance, able to withstand moisture, aggressive chemicals, and varying environmental conditions without contaminating the air sample.
Optimized for Welding & Fabrication: The ends and connection points are precision-machined to facilitate clean, strong, and consistent welds. This ensures structural integrity and a perfect hermetic seal, which is paramount for maintaining system pressure and preventing false readings in detection equipment.
Gas & Air Analysis Sensors
Industrial Air Quality Monitoring Systems
Pneumatic Sampling Lines and Probes
Emission Stack Testing Equipment
Medical Gas Detection Devices
Laboratory Analytical Instrumentation
| Parameter Category | Specification Details | Notes |
|---|---|---|
| Primary Material | Stainless Steel 316L / 316 | Grade 304 available on request. |
| Standard Outer Diameter (OD) | 3 mm to 50 mm | Custom diameters outside this range are available. |
| Standard Inner Diameter (ID) | 1 mm to 45 mm | Tight control over ID for precise flow characteristics. |
| Wall Thickness | 0.5 mm to 5.0 mm | Dependent on OD/ID ratio and application strength requirements. |
| Standard Length | 10 mm to 1000 mm | Longer continuous lengths or specific cut pieces available. |
| Dimensional Tolerance | ±0.01 mm (ID/OD) ±0.05 mm (Length) | Tighter tolerances achievable for critical applications. |
| Concentricity | ≤ 0.02 mm | Ensures uniform wall thickness for optimal welding and performance. |
| Surface Finish (External) | Ra ≤ 0.8 µm (Mechanical Polish) | Standard. Can be polished to Ra ≤ 0.4 µm (Mirror Finish). |
| Surface Finish (Internal) | Ra ≤ 1.6 µm (Reamed) | Critical for minimizing turbulence and particulate adhesion. |
| End Configuration | Square-cut, Deburred | Standard. Can be machined with chamfers, grooves, flanges, or threads. |
| Weldability | Excellent | Designed for seamless TIG (GTAW) and Laser welding. |
| Certification | Material Certificates 3.1 (EN 10204) | RoHS Compliant. Certifications provided upon request. |
| Key Application | Air/Gas Sampling Probes, Sensor Housings, Pneumatic Manifolds, Fluidic Paths | |
| Packaging | Anti-static bags, Individual foam cradles, Sealed boxes |
Product: Custom CNC-Machined Stainless Steel Welding Tubes
Q1: What makes your stainless steel tubes suitable for critical air detection components?
A: Our tubes are precision CNC-machined from high-grade stainless steel (typically 316L) to hold extremely tight tolerances (±0.01mm). This ensures a perfect fit, eliminates internal turbulence that could trap samples, and provides an ideal surface for achieving a hermetic weld. The corrosion-resistant material prevents contamination of sensitive air samples, which is paramount for accurate detection and analysis.
Q2: Which stainless steel grade do you recommend and why?
A: We highly recommend 316L stainless steel for most air detection applications. Its superior corrosion resistance, particularly against chlorides and acids, makes it ideal for harsh environments. It also has excellent weldability and low carbon content, minimizing the risk of carbide precipitation in the heat-affected zone (HAZ), which can lead to corrosion. Grades 304 and 303 are available for less demanding applications.
Q3: How do you ensure the internal surface finish is suitable for sensitive air flow?
A: The internal bore is meticulously reamed and polished to a standard surface finish of Ra ≤ 1.6 µm or better. This ultra-smooth finish minimizes surface area, preventing particulate adhesion and moisture retention, which ensures the sample air stream remains uncontaminated and flow characteristics are consistent and predictable.
Q4: What file formats do you accept for custom quotes?
A: We accept 2D drawings (PDF, DWG, DXF) and 3D models (STEP, IGS, SLDPRT, X_T) for quoting. Please ensure that all critical dimensions, tolerances, and material specifications are clearly indicated on your drawings.
Q5: What is your standard lead time for custom orders?
A: Lead time depends on the order quantity and complexity. For prototype and small-batch orders, standard lead time is typically 30-45 business days after final design confirmation. For larger production runs, we will provide a specific timeline upon order confirmation.
Q6: What is your minimum order quantity (MOQ) for custom parts?
A: We cater to both R&D and production needs. Our MOQ for custom prototypes is as low as 5000 pieces. For production runs, we offer competitive pricing scaled with volume.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2018
Employee Number:
>63
Ecer Certification：
Verified Supplier
Qingdao Sande Technology Co., Ltd. is located in Qingdao. We are specialized in manufacturing forging, CNC machining and various surface treatments. We have over 16 years of experience.We have a professional and experienced team of engineers, advanced production and testing equipment, a powerful qua... Qingdao Sande Technology Co., Ltd. is located in Qingdao. We are specialized in manufacturing forging, CNC machining and various surface treatments. We have over 16 years of experience.We have a professional and experienced team of engineers, advanced production and testing equipment, a powerful qua...
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