Inspection Standard for Raw Materials—Wind turbine foundation anchor bolts

Raw materials for steel anchor bolt are grade 35CrMoA, 42CrMoA hot-rolled round bars. After stock in, within a specified time, re-test shall be performed according to following requirements. Arrange production schedule after qualification.

1.CHEMICAL COMPOSITION

Retest results shall conform to table 1. and table 2.

TABLE 1 CHEMICAL COMPOSITION(MASS FRACTION) /%

GRADE C Si Mn Cr Mo P S
35CrMoA 0.32~0.40 0.17~0.37 0.40~0.70 0.80-1.10 0.15-0.25 ≤0.020 ≤0.010
42CrMoA 0.38~0.45 0.17~0.37 0.50~0.80 0.90-1.20 0.15-0.25 ≤0.020 ≤0.010

 

TABLE 2 RETESTING PERMISSIBLE TOLERANCES FOR CHEMICAL COMPOSITION OF STEEL ROUND BAR

C Si Mn P、S Cr Mo
±0.02 ±0.02 ±0.03 +0.005–0.00 ±0.05 ±0.01

 

Our manufacture have the most advanced facility of heat treatment, with experienced experts and service teams. Main products are Wind turbine foundation cage, anchor bolts, studs, nuts, washers, rock bolts, heat treating round bars, heat treated stirrup, seamless tubes.

 

Anyang Longteng Heat Treatment Material Co.,Ltd

Add:  Industrial Park, Indu District, Anyang City, Henan Province, P.R.C.

TEL:  +86-372-2256782

Email: [email protected]


Post time: Aug-21-2018