Spares for Pig and Pig Accessories

The company invites limited tenders for the supply of Qty= 500, Spares for Pig & Pig Accessories User Department: Pipe Line Service, Guwahati

Disc, Sealing, 406.4 MM (OD), BI-DI PIG;
Drawing NO: OI/PL-3300
Sealing Disc for 406.4 MM (OD) BI DI Pig
Physical properties of polyurethane for sealing discs
Physical properties & specification Acceptance criteria Sealing Disc
Specific Density- 1.18 to 1.25
Shore Hardness (ASTM 02240 or DIN 53505):- 65 A +/-5
Tensile Strength (BS 903 part A2 or DIN 53504)- 30 MPa
Elongation (BS 903 part A2)- 550%
100% Modulus (BS 903 part A2)-2 Mpa
300% Modulus (BS 903 part A2)- 4 Mpa
Tear Strength Nicked Angle (BS903 Part A3 or DIN 53515)- 20N/mm
Abrasion Loss (DIN 53516)- 40mm3.
Temperature range 0°C to 80°C and peak temperature up to 90°C for short duration.
i. All polyurethane discs shall be resistant to hydrocarbon after immersion in crude oil / gasoline for 7 days, permissible swelling should be maximum 5% by volume and the tensile strength should not reduce by more than 10%.
ii. All polyurethane disc supplied shall be manufactured from fresh lot of polyurethane.
iii. Shelf life of supplied polyurethane discs / pigs shall be minimum 2 years.
iv. Each disc shall have permanent marking giving information about pipeline nominal diameter and outside diameter of disc in a coated form.