R.C.C. Spun Pipe

Introduction

Reinforced cement concrete spun pipes upto 1000 mm dia are exclusively reserved for manufacture in the SSI sector. These pipes are widely used for water drainage, sewerage, culverts and irrigation. RCC pipes are classified as pressure and non pressure pipes viz. NPI, NP2, NP3, P1, P2, P3 for use in specific conditions. These pipes are made from cement, coarse and fine aggregate, sand, mild steel and HT rods and bars.

Market Potential

Public Health Engineering Department, Public Works Departments, Agriculture and Forest Department, National Highways, Environment Engineering Department, Panchayats Municipal Corporations are the bulk consumers of RCC spun pipes. Most of the customers are approved civil contractors who are executing the works of the Government Department and Public Sector Undertakings. Presently government is giving stress on rural irrigation and improving methods of water supply scheme, so the demand for pipes is increasing.

Technical Aspects
Process of Manufacture

The reinforced cage is first prepared on the cage-winding machine by hand process. The cage is then placed inside the pipe mould which is then hoisted up and mounted horizontally on the turn unions. It is rotated by driving shaft with variable speed arrangement, the rotation is kept slow in the beginning and then the speed is increased. The concrete mixture for the RCC spun pipe is prepared in proportion of 1:2:5:2:5 of cement stone, metal and sand respectively. The cement concrete is fed into the moulds during rotation which spreads inside evenly. The time required for completion of this operation depends upon the diameter and class of the pipe. The pipes are kept in the mould for 24 hours. On the following day the pipes are removed from the moulds and submersed in water in the curing tank for about 15-20 days depending upon the class of the pipe. The specimen of the pipes are subject to the following tests viz: (1) Hydrostatic pressure test (2) Three edge bearing test (3) Absorption test.

Quality Control and Standards

The Bureau of Indian Standards has formulated IS 458:1971, for maintaining Quality of the product.

Production Capacity (per year)

Pollution Control

The project does not create any noise or water pollution. The air pollution in mixing area need to be contained by providing cyclonic dust collector. Workers may use dust mask.

Energy Conservation

General precautions for saving electricity are required to be followed by the unit by adopting energy conservation techniques.

Financial Aspects
A Fixed Capital

(ii) Machinery and Equipments

B. Working Capital (Per Month)

(i) Staff and Labour (per month)

C. Total Capital Investment

Machinery Utilization

Sufficient and timely availability of Grey cement will ensure optimum utilization of the installed capacity. The pipes are kept immersed in water for curing purpose in such a way that one is not put on the other. Sufficient moulds are required to maintain regular production otherwise non-availability of required pipe moulds or collar moulds will be a bottleneck in the optimum capacity utilization.

Financial Analysis

(2) Turnover

(6) Break-even Point

Addresses of Machinery and Equipment Suppliers

1. M/s. Prakash Fabricators
1034 E, Rajaram Road,
Kolhapur (Maharashtra)

2. M/s. A. P. L. Industries
415, Dave Industrial Estate,
Bhakti Nagar Station Road,
Rajkot – 2 (Gujarat)

3. M/s. Buildtech Engineering Co.
Shree Ashadweep Complex,
16-Civil Lines,
Roorkee – 247 667,
(Uttar Pradesh)

4. M/s. Karthik Industries
36, J.C. Road,
Bangalore-560 002

5. M/s. Susanji Udyog Pvt. Ltd.
C-47, Industrial Estate,
Sanathnagar,
Hyderabad – 500 018

6. M/s. Apco Concrete Blocks and Allied Product
7th Mile, Kanakpura Road,
Doddasandra Post,
Bangalore – 560 062

7. M/s. Ashok Engineering Works
81, Ajit Industrial Estate Rakhial,
Ahmedabad – 380 023

8. M/s. Hydro Engineering Works
K1/116, CIDC,
Mori, (Gujarat)

Contact for more information:

Information Manager
TIMEIS Project
E-mail: timeis@ficci.com