rectangular inspection door SSPN
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 Product Profile
      About ZHAOHE’s rectangular duct system
ZHAOHE ventilation have a full set of Korea’s TDF duct automatic production line and other advanced machines. Depending on the advanced equipment and excellent professional engineers, ZHAOHE’s rectangular duct system stayed on a high position with high quality and efficiency. The irregular duct production ability and the accuracy are steeply increased. 3000 square meters rectangular duct daily is produced.
ZHAOHE’s duct system is widely used in air conditioning, purification, dust removal etc. ZHAOHE has established long-term strategic partnership with many famous enterprises such as NOVENCO, WUZHOU TAIKISHA, SHIMIZU, TSUNEISHI, SUNGDO, COSCO, DSIC, H&H, etc.
Some features of ZHAOHE’s rectangular duct system
ZHAOHE’s rectangular ducts have a beautiful shape while the size accurate. And the air leakage is far lower than the international standards. Advanced production technology with accurate cutting, low material consumption and High bending strength, leads to with smooth inner wall, small resistance, low energy consumption. According to the customer’s requirement, galvanized, aluminum, unilume, stainless steel can be chosen as the ducts material. Irregular ducts produced according to clients’ drawings and requirements.
Cross joints
ZHAOHE ventilation rectangular duct used angle flanged or flat ring flanged joints. Angle steel flanged joints mostly used in large ducts and high pressure system. Flat ring flanged joints have advantages of no welding, no riveting, quickly assembled.
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