valves & flanges & pipe fittings

manufacturer &

supplier in china

We are a leading Chinese manufacturer, supplier and exporter of valves, flanges, pipes and fittings in the field of municipal water supply, irrigation, fire protection, HVAC system, as well as petrochemical industry.

We provide a wide range of valves, flanges pipes and pipe fittings which are made of ductile iron, malleable iron, cast steel, stainless steel, PVC, PPR etc., in accordance with API, EN, BS, DIN and GB standards. Our knowledge in the field and rich experience in cooperation with contractors around the world allow us to respond quickly and insure you of getting just the products you are looking for.

m2 of production base

tons of annual output


production facilities

who we are

Mainline Trade is an enterprise group integrating the production, distribution and exportation of valves, pipes, fittings, flanges and other related accessories in the field of municipal water supply and drainage, irrigation, HVAC system, firefighting, as well as petrochemical industries.

Our factories are located in Taigu of Shanxi province, which is known as the city of malleable iron. The production base covers an area of over 100 000 square meters, with the building area of more than 60 000 square meters. Our annual output is over 60 000 tons of pipe fittings (malleable iron, ductile iron, cast steel, etc.), valves and various casting products. We have more than 1000 employees and over 500 production facilities, which include 4 automatic molding production lines, 2 semi-automatic production lines, 4 medium frequency electric furnaces and 5 sets of electric heating galvanizing furnaces etc. learn more

beijing ruoze international business and trade co.,ltd

our strategic partners

We have established long-term strategic partnerships with many leading companies in related industries. Therefore, we have a reliable and stable supply capacity, can provide high quality products at competitive prices, and provide quality assurance and after-sales service for the products we manufacture and distribute.

mainline valves certifications

our advantages

Complete Product Line

In addition to our own production capacity, we have also established long-term cooperative relationships with many high-quality manufacturers in the industry. We can manufacture and provide all kings of valves, pipes, fittings, grooved couplings, flanges, fire equipment, which are made of carbon steel, stainless steel, ductile iron, malleable iron, or brass, and meet the current standards of: API, BS, DIN, EN, JIS and GB.

Professional Technical Team

Our team consists of experienced engineers in related fields, professional sales personnel and experienced foreign trade service personnel. We have extensive engineering construction experience in China, West Africa, North Africa, and Southeast Asia. Professional team and years of cooperation with contractors and distributors worldwide in the filed make us easily offer latest products suitable to the industry.

Quality control

We have a complete quality inspection system and all necessary quality inspection equipment. All our products have undergone strict quality inspection before leaving the factory, and are ISO 9001 compliant. We have various products certified by FM, UL, CE, WRAS, VDS, or LPCB. With our experience and expertise in the field, we are able to reduce liability risks associated with uninformed or inexperienced procurement practice.

Stock and fast delivery

We have sufficient stocks all year round, so that we can respond quickly to market demands. We have also a warehouse and distribution center of over 10,000 square meters in Jinan of Shandong Province where Qingdao port is located, which allows us to minimize the delivery time of foreign orders. Combined with expertise, experience and perfect supply network, we are able to meet all your requirements and expectations.

our categories

our projects

Since established in 2005, we have provided products for more than 500 projects worldwide in the field of municipal water supply, smart irrigation, fire protection, HVAC system, as well as petrochemical industry. Our business includes providing a complete set of products, technical support and tender quotation consultation for similar projects. Our vision is to bring value to customers through professional technical knowledge and strong supply chain integration capabilities.

We provide products that meet local standards and quality requirements and technical services for international projects. In recent years, we have cooperated with many multinational engineering contractors and participated in the implementation of a large number of projects in Africa, Eastern Europe, West Asia, Southeast Asia, South America and other places, such as the farmland irrigation project in Mali, the Municipal Water Supply and Drainage Project in Mauritania, and the Concorde Residential Community Project in Ivory Coast, Fire Engineering Project in Algeria.

feathured products

latest products

news and blogs

contact us

Feel free to send us your inquiry  with all details and we will contact you shortly via e-mail or phone and answer all your questions or prepare a detailed offer for you.