Import Bolt Electric Heating Rod 2j-20-45 — Buy in wholesale FOB from Supplier in China

The bolt electric heating rod 2J-20-45 is a threaded immersion heater designed for direct installation into pressure vessels, tanks, and pipeline systems in thermal and hydroelectric power plants. The model designation indicates a bolt-mount configuration with specific power and dimensional parameters: the '2J' series prefix denotes a two-terminal design, while '20-45' typically refers to the nominal diameter and active heating length in millimetres (20 mm thread diameter, 45 mm heated zone). Dongfang Yoyik Engnieering Co., Ltd. supplies this component from their facility in Deyang, Sichuan Province, a region with established heavy electrical manufacturing infrastructure. The heating element construction relies on a stainless steel or Incoloy sheathed resistor embedded in compacted magnesium oxide insulation, standard for industrial bolt heaters rated for continuous duty in steam and water systems.

Material selection for the 2J-20-45 follows typical power plant specifications: the sheath alloy resists chloride stress corrosion and maintains mechanical integrity at operating temperatures common to boiler feedwater and condensate systems. The bolt thread (typically M20 x 1.5 or comparable metric fine thread) mates with welded boss fittings on turbine auxiliary equipment. Sheath watt density is a critical parameter, though not stated in the source data; standard industrial practice for water heating applications ranges 5-10 W/cm2 to prevent nucleate boiling film buildup. The terminal enclosure, when present, carries an IP rating appropriate to the installation environment, with NEMA 4 or IP65 being typical for indoor turbine hall locations subject to steam and washdown conditions.

Primary buyers for the 2J-20-45 are maintenance departments at thermal power stations, overhaul contractors, and original equipment manufacturers of turbine auxiliary skids. The heater addresses freeze protection, temperature maintenance, and pre-heating functions in lubricating oil systems, fuel oil lines, and condensate drains. Sourcing requires confirmation of voltage (220 VAC or 380 VAC, single or three-phase), wattage, and sheath material grade to match the specific service fluid. Buyers should request the supplier's test protocol, including megger insulation resistance at 500 VDC and dielectric withstand verification, before committing to batch orders.

Dongfang Yoyik Engnieering Co., Ltd. operates from 4-3f, Building A, Huashan Platz in Deyang, Sichuan Province, China (postal code 618000). The company holds a Harbor trust tier designation, which represents a baseline verification level on the platform. The response rate shows 0.00 percent with zero average response hours, indicating that direct inquiry responsiveness through this channel has not been established or documented. Buyers should initiate contact through multiple methods (telephone, email, and any provided messaging) to gauge actual communication reliability before relying on this supplier for time-critical procurement.

The supplier's profile emphasises senior engineering staff with experience at major Chinese hydropower projects including Gezhouba, Ertan, and Three Gorges dams, suggesting technical depth in power plant auxiliary systems. Their product range extends beyond heating elements to encompass flowmeters, extension cables, exciter control cards, differential expansion probes, temperature sensors, and programmable logic controller modules. This breadth indicates a trading or distribution role alongside any manufacturing function, though the exact operational model (manufacturer, authorised distributor, or hybrid) is not specified in the source data. No certifications, ISO registration, or factory audit information is present; buyers should request quality management system documentation and reference installations for the 2J-20-45 specifically.