procurement of mesh screen for poh track machine, 50mm square screen mesh sieb mw50 / h10 650 x 938 specification screens weaved out of material carbon case hardening, steel en- 32b. continuing to bs-970-1955. composition carbon-0.10 to 0.18% silicon-0.05 to 0.35%. manganese-0.6 to 1.00% [ plasser part no:- 64.09.5565 ] make:- plasser or equivalent [ warranty period: 9 months after the date of delivery ] , 25mm square screen mesh sieb mw25 / h8 650 x 1090 specification screens weaved out of material carbon case hardening, steel en- 32b. confirming to bs-970-1955. composition carbon-0.10 to 0.18% silicon-0.05 to 0.35%. manganese-0.6 to 1.00% [ plasser part no:- 64.09.5556 ] make :- plasser or equivalent [ warranty period: 9 months after the date of delivery ] , 25mm square screen mesh sieb mw25 / h8 670 x 1090 specification screens weaved out of material carbon case hardening, steel en- 32b. confirming to bs-970-1955. composition carbon-0.10 to 0.18% silicon-0.05 to 0.35%. manganese-0.6 to 1.00% [ plasser part no:- 64.09.5558 ] make :- plasser or equivalent [ warranty period: 9 months after the date of delivery ] , 25mm square screen mesh sieb mw25 / h8 641 x 1050 specification screens weaved out of material carbon case hardening, steel en- 32b. confirming to bs-970-1955. composition carbon-0.10 to 0.18% silicon-0.05 to 0.35%. manganese-0.6 to 1.00% [ plasser part no:- 64.09.5567 ] make:- plasser or equivalent [ warranty period: 9 months after the date of delivery ]