Import Bolts Heater 1.2311(4)-ã�?36x1300 — Buy in wholesale FOB from Supplier in China

The bolts heater 1.2311(4)-�?36X1300 is an electric heating rod designed for turbine bolt preheating applications in power generation equipment. The designation indicates a material grade of 1.2311, a German tool steel equivalent to AISI P20, with a 36 mm diameter and 1300 mm heated length. Deyang Dongfang Yoyik Engineering Co., Ltd. lists this component within its power plant spare parts catalogue alongside thermocouples, eddy current sensors, and servo modules for steam turbine maintenance.

This heater rod employs a direct-resistance heating principle, where electrical current passes through the alloy steel body to generate concentrated thermal energy at the bolt location. The 1.2311 steel base material offers a typical tensile strength of 980-1080 MPa and maintains structural stability at operating temperatures up to 400 degrees Celsius, though the exact maximum working temperature for this specific heater variant should be confirmed with the supplier. Standard surface finish for such turbine bolt heaters is typically black oxide or nickel plating to resist oxidation in humid turbine hall environments. The 36 mm diameter suits large steam turbine casing bolts common in 200-600 MW generator sets, with the 1300 mm length accommodating multi-stage high-pressure cylinder assemblies.

Power plant maintenance contractors and original equipment manufacturer service teams are the primary buyers for this specialised component. The heater enables controlled thermal expansion of large alloy steel bolts during turbine overhaul, preventing galling and ensuring accurate torque application. Buyers should confirm voltage requirements (typically 220 V or 380 V AC for Chinese-manufactured units), wattage rating, terminal connection type, and whether the unit includes integrated thermocouple feedback for temperature monitoring. Deyang Dongfang Yoyik Engineering holds ISO9002 quality system certification according to its profile, though buyers should request current certificate validity and specific material test reports for batch traceability.

Deyang Dongfang Yoyik Engineering Co., Ltd. is headquartered in Deyang, Sichuan Province, China, with its registered address at Huashan Plaza in Jingyang District. The company operates in the electromechanical equipment sector with a stated focus on hydroelectric and coal-fired generator sets and their associated spare parts. Its trust tier is classified as harbor, and it shows a zero percent response rate with no recorded average response hours, which indicates limited communication data is available for prospective buyers to assess engagement reliability.

The supplier's product range extends beyond heating elements to encompass electrical and electronic product processing, including sensors, transmitters, servo modules, and monitoring equipment for rotating machinery. The listing bundles the bolts heater with numerous other power plant components, suggesting this is a trading or distribution operation rather than a dedicated heater manufacturer. Buyers should verify whether Deyang Dongfang Yoyik Engineering manufactures this heater in-house or sources it from a subcontracted foundry, and should request factory audit reports or third-party inspection certificates to substantiate the ISO9002 claim. No employee count, annual revenue, or named client references appear in the available profile data, and these should not be assumed or requested as if they were stated.