The corrugated steel spiral pipe is an outstanding drain pipe with structural stability, excellent durability, easy construction, maintenance and economic efficiency (VE LCC). In particular, with an expansion ratio of about 5%, it is a shock-resistant drain pipe that can prevent sink-holes following earthquakes like those that occur frequently (as of August 2018, earthquakes of 2.0 and higher on the Richter scale have occurred 76 times in the previous 8 months), and in the US, 70 to 80% of the drain structures use corrugated steel spiral pipe. With the development of POSCO HGI zinc hot dip galvanized steel plate in Korea in 1990, it has come into wide use as the new concept drain structure perfectly suited for the domestic environment (70% of the land is mountainous with high flow velocity, various kinds of soils containing chemical components and aqueous solution).

The corrugated steel spiral pipe produced by Daeun Co., Ltd. is manufactured in compliance with the KS D 3590 and ASTM A 760/760M-00 manufacturing regulations, and meets multiple testing requirements. As a result, the pipe structure and pipe base stability of "AISI (structural calculation)" condition are secured and it is designed and manufactured to prevent pipe deformation and damage due to earth pressure and live load (impact load; DB 24-ton) and uneven settlement of soft ground. In addition, it was verified and certified by the Engineering Division of FAR EAST DISTRICT (FED) of the US 8th Army in May 2007, and registered with the US 8th Army FED. It is an excellent drain pipe with proven structural stability that can be used for all establishments storm drain & sewer pipes of FED.

In addition, "Daeun Co., Ltd." has developed zinc hot dip galvanized steel plate, which is the BASE-METAL of corrugated steel spiral pipe, coating material (polar PE) without adhesion and peeling, coating thickness selection method adaptable to abrasive environment, and coating devices, and protected the zinc hot dip galvanizing layer against corrosive [strong acidity (pH<4), strong alkaline (pH>12), chemical environment] and abrasive environments (abrasive environment caused by soil and gravel occurring at or above rainfall flow rates of 5~15ft/sec and 5ft/sec) and secured at least 50 years of durability (POSCO durability data) and was registered as a storm water product by the Public Procurement Service. In addition, it has been certified as a patented technology by blocking water leakage from the LOCK-SEAM area occurring due to the structural nature of the corrugated steel spiral pipe. This multipurpose pipe can be used as drainage pipe for industrial wastewater and livestock wastewater as well as for agricultural water supply pipe.

Through Daeun Co., Ltd.'s unique technology development and accredited agency certification, compliance with domestic and international standards and production, storm water detention tank (discharge type) and storm water recycling detention tank, sewage buffer detention tank and detention tank for industrial wastewater were developed using corrugated steel spiral pipe. It was proven to be a very efficient structure in terms of structural stability, corrosion resistance and abrasion resistance, watertightness, durability, ease of installation, maintenance and economic efficiency compared with conventional concrete PC structures and corrugated steel plate structures.

In sum, "Daeun Co., Ltd." C.S.P, PE Double Coated C.S.P, Watertight Type PE Double Coated C.S.P is produced according to strict quality control and engineering. We strive to meet the conditions and cost reduction desired by our customers and will continue as viable partners in business growth and profitability of our customers through continuous technology development and proven trust.
"Daeun Co., Ltd." will grow to be the key company society needs. We ask for your unceasing support and guidance.
For your reference, please refer to the book for C.S.P technical detail information data and catalogue of DaEun’s. If you have any inquiries or need detailed engineering, you can visit our company or we can visit your company for support. Thank you.

Daeun Co., Ltd.