LAXMI UDYOG manufacturers the best quality "LAXMI " SUCKER RODS/ PONY RODS in grades and sizes detailed in Table no.1 Keeping in view that Sucker Rods/ Pony Rods are subjected to tremendous forces of pull and compression with vibration and are exposed to hostile environment containing acids, salts, abrasives and other contamination's, Rods are designed to match the conditions and requirements of the oil wells.
API grade Sucker Rods/ Pony Rods are made in full compliance with the latest edition of API Specification 11 13. Other high grade and ultra high grade strength Sucker Rods for heavy and extra heavy load services are manufactured out of material with mechanical properties mentioned in the Table.
The incoming material is carefully inspected for any damage fault and discontinuities and tested for chemical composition & N.D.T. before putting it in process of manufacturing. High quality standard is maintained at various stage inspections.
 

Manufacturing :

Sucker Rods / Pony Rods are manufactured from hot rolled carbon or alloy steel detailed in Table no.1. Rolled Rods are machine straightened and cold drawn to the required size. Both ends are hot upset forged to API designed shape. The rods are heat treated over the full length by Induction Process. As per requirement of mechanical properties, the rods are normalized or normalized and tempered to the specified level or quenched and tempered to the required hardness and strength, Care is taken to obtain refined grain structure with no residual stresses in the rod. A sample specimen is cut from the heat treated material and is tested for ultimate tensile strength, yield strength and elongation. The rod is then again checked for straightness. The forged ends are properly aligned with its body. Rods are decaled and cleaned. The upset forged ends are machined on C.N.C. Lathe machines as per API dimensions given in Table no. 2. Threads on both ends are cold formed on Thread Rolling Machine and checked with API approved gauges.
                        

Sucker Rods / Pony Rods / Coupling & Sub ( Cross Over ) Coupling

(  Chemical Properties )

Type of Rod LS-1 LS-2 LS-3 LS-4 LS-5 Steel AISI Specification C-1536 4621 4142-H 4337 4330 Grade API-G API-K API-D High Strength Ultra High Strength (A) CHEMICAL PROPERTIES % Carbon 0.30-0.39 0.18-0.25 0.38-0.45 0.35/0.40 0.28/0.35 Managanse 1.10/1.40 0.60/0.80 0.80/1.00 0.60/0.80 0.70/0.90 Phosphorus 0.04 Max 0.035 Max 0.035 Max 0.04 Max 0.035 Max Sulpher 0.04 Max 0.035 Max 0.035 Max 0.04 Max 0.035 Max Silicon 0.15/0.35 0.15/0.35 0.15/0.35 0.20/0.35 0.15/0.35 Chromium Trace - 0.80/0.10 0.70/0.90 0.70/0.90 Moly bdenum Trace 0.15/0.25 0.15/0.25 0.20/0.30 0.20/0.30 Nickel - 1.65/2.00 0.45 Max 1.65/2.00 1.65/2.00 (B) MECHANICAL PROPERTIES 1. Tensile strength 1000 PSI 90/115 90/115 115/140 125/145 140/150 2. Yield strength 1000 PSI 60 Min. 60 Min. 85 Min. 90 Min. 115/125 3. Elongation % 15 Min. 16 Min. 10 Min. 10 Min. 10 Min. 4. Reduction in Area % 45 Min. 55 Min. 45 Min. 45 Min. 45 Min. Note :- The above specifications are subject to change without notice.             The above values are average and may vary from actual measurement. (C) HEAT TREATMENT Induction heating normalized Induction heating normalized & tempered Induction heating normalized & tempered Induction case hardned (Quenched & tempered) Induction case hardned (Quenched & tempered) (D) RECOMMENDATION FOR USE 1) LS-1 :- For light to medium loads in shallow wells to medium depth wells and non-corrosive or inhibited wells.                  (API Grade-C) 2) LS-2 :- For medium to heavy load in medium to deep wells and mild corrosive or inhibited wells.                  (API Grade-K)           3) LS-3 :- For heavy loads in non-corrosive or inhibited wells.                  (API Grade-D) 4) LS-4 :- For heavy load at any depth and in mild corrosive or inhibited wells.                  (High Strength) 5) LS-5 :- For extra heavy loads at any depth in corrosive conditions.\ (Ultra high Strength)

Dimension and Tolerances :

External dimensions of Couplings and Sub-Couplings shall be as per table 5.

Anti Galling Treatment & Rust Prevention :

Sucker Rods ends, Couplings and Sub-Couplings are subjected to phosphate treatment to reduce galling tendency and help in protecting them against atmospheric corrosion while in transit and storage. The exposed metallic surface are also treated to protect them from rusting

Packing / Storage / Handling :
 
Rods are packed according to API recommendation to prevent damage during handling and transportation. Care is taken to prevent stresses due to cold bending of rods when these are lifted. Suckers Rods are placed in wooden frames in round recesses spaced on them. Proper fixing arrangement for lifting the crate is made.