This specification describes the technical demands and characteristics of
cement mortar coating on steel pipes. In the majority of cases these pipes
are internally lined with cement mortar as anti-corrosion protection.
The purpose of cement mortar coating is to offer ant-corrosion and
mechanical protection. Cement mortar coated pipes can be laid in
channels without any prior sand-bedding. The pipes are also suitable for
laying directly in rocky areas.
2. Sorting and naming
2.1 20mm Cement mortar
20mm cement mortar is applied directly on the steel pipe.
20mm cement mortar is applied on the extruded polyethylene exterior
coating (APC-3) as anti-corrosion and mechanical protection.
3. Pipes and materials
The pipes and materials used in the preparation of the coating comply
with their relevant standards and specifications as detailed below:
The piped comply with requirements of Israeli Standards 103, 530, 593.
The internal lining complies with Israeli Standard SI 5207.
The materials, including cement, aggregates, reinforcing net
and additional materials comply with requirements of Israeli Standard
4. Coating layer
The coating layer is manufactured in one piece and is composed of
cement and mineral aggregates that strengthen the concrete and reduce
absorption of water. A polymer net supports the cement, polymer fibers
strengthen the concrete and reduce its tendency to crack and other
additives improve the durability of the concrete. Plastic sheeting is wound
around the cement mortar. This serves as a marker and reduces loss of
water during the curing process. (Note: After curing the sheeting can be
removed). The pipe end is not coated, enabling welding and any other
accepted means of connection.