2026 Top 10 Manhole Manufacturers in China

Wenzhou Shuangtuo Valve Co., Ltd

Wenzhou Shuangtuo Valve Co., Ltd., with its registered address at 64 Madao East Road, Madao Village, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province, is registered with the Yongjia County Market Supervision Administration. The legal representative is Zhang Tao, and the business scope includes general projects such as the manufacturing of ordinary valves and plugs (excluding the manufacturing of special equipment); Sales of valves and plugs; Mechanical parts and component processing; Sales of mechanical parts and components; Manufacturing of hardware products; Wholesale of hardware products; Sales of metal products; Manufacturing of instruments and meters; Sales of instruments and meters; Manufacturing of industrial automatic control system devices; Sales of industrial automatic control system devices; Manufacturing of pneumatic power machinery and components; Sales of pneumatic power machinery and components; Manufacturing of hydraulic power machinery and components; Sales of hydraulic power machinery and components; Fastener manufacturing; Sales of fasteners; Manufacturing of metal seals; Sales of metal seals; Sales of special equipment; Installation services for ordinary mechanical equipment; General equipment repair; Electrical equipment repair; Internet sales (except for the sale of goods that need permission) (except for items that need approval according to law, business activities shall be carried out independently according to law with the business license).. Core products: Manhole, Drawer Style Flame Arrester, Buffer Check Valve

Zhejiang Liangbiao Self Control Valve Co., Ltd

Zhejiang Liangbiao Self Control Valve Co., Ltd., registered in He'er Village, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province (within Yongjia County Jinlun Valve Co., Ltd.), registered with Yongjia County Market Supervision and Administration Bureau, with Cao Aichun as the legal representative. Its business scope includes general projects: manufacturing of ordinary valves and plugs (excluding special equipment manufacturing); Sales of valves and plugs; Manufacturing of pumps and vacuum equipment; Sales of pumps and vacuum equipment; Manufacturing of hardware products; Retail of hardware products; Sales of mechanical equipment; General equipment manufacturing (excluding special equipment manufacturing); Manufacturing of industrial automatic control system devices; Sales of industrial automatic control system devices; Instrument and meter repair; General equipment repair; Manufacturing of mechanical and electrical equipment; Sales of mechanical and electrical equipment; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Manufacturing of bearings, gears, and transmission components; Sales of bearings, gears, and transmission components; Motor manufacturing; Sales of firefighting equipment; Manufacturing of security equipment; Electronic product sales; Sales of lighting fixtures; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Sales of intelligent power transmission and distribution and control equipment; Sales of daily necessities; Technology import and export; Import and export of goods (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law).. Core products: Manhole, Flange Ball Valve, Wafer Butterfly Valve

Hebei Bolin Environmental Protection Technology Co., Ltd

Hebei Bolin Environmental Protection Technology Co., Ltd., with its registered address located 150 meters south of Zhangsan Overpass in Beihuan, Botou Economic Development Zone, Cangzhou City, Hebei Province, is registered with the Botou Market Supervision Administration Bureau and represented by Gao Jingya as its legal representative. Its business scope includes general projects such as environmental protection technology promotion services. Research and development, manufacturing, maintenance, and sales of dust removal equipment and accessories, cloth bags, bag cages, unloaders, air doors, baffle doors, ventilation butterfly valves, exhaust gas treatment equipment, supports and hangers, manholes, explosion-proof valves, solenoid valves, metal compensators, sleeve compensators, metal hoses, non-metal compensators, conveying equipment and accessories, plug valves, and flap valves. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Manhole, Air Door, Discharger

Yanshan Kunjian Intelligent Manufacturing Pipe Fitting Factory

Yanshan Kunjian Intelligent Pipe Fittings Factory, whose registered address is 150 meters west of the road south of East memorial archway, Yanshan County, the registration authority is Yanshan County Market Supervision Administration, the legal representative is Miao Jiankun, and its business scope includes general items: wholesale of hardware products; Sales of metal products; Sales of metal materials; Sales of metal tools; Sales of insulation materials; Sales of anti-corrosion materials; Sales of metal structures; Sales of rubber products; Sales of pipeline transportation equipment; Sales of metal fittings for construction; Sales of special equipment. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Manhole, ,

Langfang Yuankun Sealing Materials Co., Ltd

Langfang Yuankun Sealing Materials Co., Ltd. is registered in Liuguxian Village, Zangtun Township, Dacheng County, Langfang City, Hebei Province. The registration authority is the Administration for Industry and Commerce of Dacheng County, Langfang City, and the legal representative is Xue Pengkun. The business scope includes the production and sales of polytetrafluoroethylene products, packing roots, rubber products, graphite products, metal pads and sheets, biomass pellet combustion machines, packaging machines, cement foam products, silicon board equipment, non dismantling template equipment, and packaging machines; Sales: asbestos products, fiberboard, mats, fireproof materials, insulation materials, chemical products (excluding hazardous chemicals). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Manhole, Ptfe Coated Corrugated Plate Gasket, Spiral Wound Gasket

Botou Jiayuan Environmental Protection Machinery Equipment Co., Ltd

Botou Jiayuan Environmental Protection Machinery Equipment Co., Ltd., with its registered address located in Xiaoduli Village North, Botou City, is registered with the Botou Market Supervision and Administration Bureau. The legal representative is Li Weisong, and its business scope includes the manufacturing of specialized environmental protection equipment. Dust removal equipment, dust removal accessories, conveying equipment, ventilation valves, pipeline expansion joints, VOCS waste gas treatment equipment, catalytic combustion equipment, zeolite fixed bed, RTO incineration equipment, zeolite wheel production, sales, installation, maintenance, and renovation; Sales of cast iron and steel castings; Mechanical processing * * (projects that require approval by law can only be operated after approval by relevant departments). Core products: Manhole, Dust Collector Accessories, Gasification Plate

Wenzhou Wanlin Machinery Co., Ltd

Wenzhou Wanlin Machinery Co., Ltd., registered at No. 3135 and 3137 Yongqiang Avenue, Shacheng Town, Longwan District, Wenzhou City, Zhejiang Province, is registered with the Market Supervision Administration of Longwan District, Wenzhou City. The legal representative is Li Wanqiong, and the business scope includes manufacturing, processing, and sales of light industry machinery and equipment, pipeline accessories, flanges, heads, and faucets.. Core products: Manhole, Industrial Grille Floor Drain, Clamp Sealed Bucket