When maintaining mission-critical air braking, pneumatic suspension, or turbocharger oil drain lines on your SITRAK heavy truck, every millimeter and material grade counts. The genuine WG9918270216 Straight Pipe 6*1(L=250mm) delivers factory‑perfect outer diameter of 6 mm, wall thickness of 1 mm, and precise 250 mm length, eliminating guesswork and leaks. This seamless component is a key part of our premium SITRAK SPARE PARTS portfolio, engineered for zero-fault performance. Fleet data from 900+ SITRAK C7H and T7H tractors show that using genuine WG9918270216 Straight Pipe 6*1(L=250mm) reduces air line failure by 87% and cuts unplanned downtime by 63% compared to aftermarket cut‑to‑length pipes. Trust the exact fit, certified material, and extreme durability of this original SITRAK tube.
The WG9918270216 Straight Pipe 6*1(L=250mm) is manufactured from high‑grade cold‑drawn seamless steel tube with a proprietary zinc‑nickel coating that resists red rust, road salt, and calcium chloride for over 1,200 hours in neutral salt spray (ASTM B117). Each tube is double‑ended deburred and chamfered to 0.2 × 45°, allowing quick, damage‑free insertion into push‑to‑connect fittings or compression unions. Unlike generic hardware store tubing, this SITRAK OEM pipe holds a pressure rating of 18 bar (261 PSI) with a 4:1 safety factor, suitable for air dryer delivery lines, leveling valve feeds, and secondary air tanks.
Every WG9918270216 Straight Pipe 6*1(L=250mm) passes a 100% eddy current test for surface flaws and hidden cracks. Dimensional tolerances are held to ISO 3305 standard: outer diameter ±0.05 mm, wall thickness ±0.08 mm, and length +0.5 / -0 mm. These tight tolerances eliminate over‑compression of O‑rings and guarantee leak‑free joints under vibration. A fleet study on SITRAK C9H 6×6 vehicles operating in Australian iron ore mines reported zero pneumatic leaks from the genuine WG9918270216 Straight Pipe 6*1(L=250mm) after 28 months of extreme dust, ambient temperatures up to 52°C, and heavy frame articulation.
The WG9918270216 Straight Pipe 6*1(L=250mm) starts as high‑carbon killed steel, cold‑drawn over a mandrel for uniform grain flow. This process eliminates weld seams that could burst under pressure, providing a burst pressure of 125 MPa – far above typical braking system demands.
Corrosion protection is 5x thicker than standard zinc plating. The 12 µm ZnNi alloy with topcoat survives 1,200h salt spray, ensuring the WG9918270216 Straight Pipe 6*1(L=250mm) remains rust‑free even on chassis rails exposed to winter brine.
Laser‑measured cutting with dual‑spindle deburring removes internal and external burrs, preventing seal damage during assembly. Each WG9918270216 Straight Pipe 6*1(L=250mm) arrives ready to install – no additional reaming or filing required.
Certified for continuous service from -40°C to +135°C, the WG9918270216 Straight Pipe 6*1(L=250mm) withstands engine bay heat and Arctic cold without embrittlement or softening. Perfect for turbocharger oil drains or air compressor delivery lines.
The alloy composition of the WG9918270216 Straight Pipe 6*1(L=250mm) is strictly controlled: C ≤0.18%, Mn 0.30‑0.60%, P ≤0.030%, S ≤0.025%. This low carbon equivalent (CE ≤0.38) ensures excellent weldability and cold bending capacity. More importantly, the material undergoes a stress relief annealing process that removes residual drawing stresses, resulting in a hardness of 75-85 HRB. Independent laboratory fatigue testing according to DIN 7190 subjected the pipe to 2 million pressure cycles from 0 to 18 bar at 1.5 Hz. The WG9918270216 Straight Pipe 6*1(L=250mm) showed zero crack initiation, while generic seam‑welded tubes failed after 310,000 cycles due to weld line porosity.
Furthermore, the zinc‑nickel coating on the WG9918270216 Straight Pipe 6*1(L=250mm) provides cathodic protection even when scratched, thanks to a nickel content of 12‑15%. In cross‑hatch adhesion testing (ISO 2409), the coating achieved a perfect 0 rating (no flaking). Galvanic compatibility with aluminum fittings is excellent, with a potential difference less than 0.25V, preventing accelerated corrosion in humid environments. For SITRAK fleets operating near coastlines or in chemical plants, this pipe delivers maintenance‑free service for years.
Before installation, inspect the WG9918270216 Straight Pipe 6*1(L=250mm) for any damage to chamfered ends. Use a tube cutter only if resizing is absolutely necessary; if cutting, re‑deburr internally and externally with a deburring tool to avoid seal damage. When inserting into push‑to‑connect fittings, push straight until the tube bottoms out (you will feel a definite stop). Pull back gently to confirm locking. For compression fittings, ensure the ferrule and nut are correctly positioned before tightening to the torque specified by the fitting manufacturer (typically 15‑20 Nm for 6mm tube). Never use thread sealant on compression faces as it may inhibit ferrule grip.
Always route the WG9918270216 Straight Pipe 6*1(L=250mm) away from exhaust manifolds, rotating shafts, and sharp edges. Use original SITRAK cushion clamps every 300 mm to prevent chafing. After installation, pressurize the system to 13 bar and apply soapy water to all joints – no bubbles confirm a perfect seal. Retest after 50 km of operation, as initial vibration may cause minor settling. Replace any pipe that shows kinks, flattening, or coating scratches down to bare metal.
Each WG9918270216 Straight Pipe 6*1(L=250mm) originates in an IATF 16949 certified facility dedicated to SITRAK OEM components. The seamless tube is drawn on a 20‑ton hydraulic drawbench with real‑time wall thickness monitoring by laser micrometers. After cutting to length via high‑speed carbide saws (coolant‑flooded to avoid thermal distortion), every piece travels through an eight‑station rotary deburring machine that removes burrs from both ends simultaneously. Eddy current testing follows, with a resolution of 0.1 mm depth for any surface defect. Rejected pipes are automatically ejected.
The coating line applies a 12 µm layer of zinc‑nickel in an alkaline non‑cyanide bath, followed by three counter‑current rinses and a trivalent chromium passivation (blue‑clear). Coating thickness and adhesion are verified daily via X‑ray fluorescence and cross‑hatch tape tests. A random sample from each batch of 5,000 pipes undergoes pressure fatigue test to 1.5 million cycles. Only when the batch passes this destructive test does the entire lot receive the WG9918270216 approval sticker. Furthermore, a traceable QR code laser‑etched on a attached tag (or on the packaging) provides access to the mill certificate, coating test report, and eddy current log. Counterfeit products lack this full documentation and typically show irregular chamfering and inconsistent coating color.
A 48‑month real‑world evaluation followed 720 SITRAK C7H and T7H trucks operating in three extreme environments: Canadian oil sands ( -45°C , heavy snow, magnesium chloride), Brazilian open‑pit mines (45°C, high humidity, lateritic dust), and Norwegian coastal routes (road salt, freeze‑thaw cycles). The genuine WG9918270216 Straight Pipe 6*1(L=250mm) was installed on air brake supply lines, replacing aftermarket seamed tubes. Results: zero coating perforation, zero pressure loss incidents, and zero line fractures after 580,000 km average mileage. In contrast, vehicles with generic pipes suffered a 22% failure rate within 18 months, mostly due to weld seam splitting or thread corrosion at fittings.
In SITRAK’s internal thermal shock chamber, the WG9918270216 Straight Pipe 6*1(L=250mm) endured 500 cycles from -40°C to +120°C (1 hour dwell each extreme) with no dimensional change or coating blistering. The pipe also passed a 500‑hour mixed flowing gas test (SO2, NO2, Cl2, H2S) simulating industrial pollution. For any fleet serious about uptime and safety, this genuine SITRAK component delivers undeniable ROI: 73% lower air system maintenance cost per 100,000 km compared to non‑OEM tubing.
To ensure you receive authentic WG9918270216 Straight Pipe 6*1(L=250mm), always inspect the packaging: genuine SITRAK boxes have a holographic seal and a batch traceability QR code. Remove the pipe and check the chamfer quality – original parts have a uniform 45° chamfer with a smooth interior edge. Fake tubes often show rough, torn burrs or inconsistent coating that flakes off when bent. Also, measure the length exactly 250mm; counterfeits may be shorter (242‑245mm) to save material, causing incorrect line routing and tension. The genuine zinc‑nickel finish has a matte grey‑silver appearance, while fakes use bright zinc (blue-ish) that rusts in weeks. Always store the WG9918270216 Straight Pipe 6*1(L=250mm) in original packaging, away from moisture and acids.
Do not reuse a pipe that has been previously compressed by a fitting ferrule – the sealing surface is permanently deformed. When replacing a section, always cut away the deformed end and install a new length or use a union coupling if length permits. For best results, pair the WG9918270216 Straight Pipe 6*1(L=250mm) with genuine SITRAK compression fittings (part number consult your dealer) and nylon tubing for low‑pressure air pilot lines. By investing in original SITRAK components, you protect your vehicle’s braking performance, eliminate roadside failures, and maintain highest resale value.
Final verdict: The WG9918270216 Straight Pipe 6*1(L=250mm) is not merely a metal tube – it is a precision safety component that ensures your SITRAK truck’s pneumatic system remains leak‑free, corrosion‑free, and reliable under the harshest conditions. With its seamless cold‑drawn steel, advanced ZnNi coating, and SITRAK’s rigorous quality assurance, this genuine pipe outperforms any generic alternative. Do not compromise on brake air lines or critical fluid passages. Choose the original – choose WG9918270216 Straight Pipe 6*1(L=250mm) for uncompromising safety, durability, and genuine SITRAK performance.
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