Changzhi Long Xin stairs pedals, boutique in the boutique!

I produced treads according to whether the front fender and ladder beam with four forms of connection mode, expressed as T1, T2, T3, T4. ◆? From an economic point of view, it is recommended whenever possible modulus width (using 125,155,185,215,245,275 Series 1, Series 2 uses 125,165,205,245,275 mm, etc.) in multiples of 100mm length (eg 500,600,700,800,900,1000,1200 mm, etc.). ◆? Treads Tolerances: Width W ± 3mm, length L-3mm. Recommended ladder tread width T1, T2, T3, T4 flat center spacing 30mm 95 125 155 185 215 245 275 flat center spacing 40mm T1T2? 125 165? 205 245 285 T3T4? 115 155? 195 235 275 bolt hole center distance A ( mm) 45 75 100 150 ladder ladder pedal pedal side products Legend?? T1: welded, no front fender T3: Welding fixed pattern front fender T2: bolts, no front fender??? T4: Bolt , pattern front fender T5: welded, grooved steel skid plate T6: bolts, slotted steel skid plate???? T7: welded, round skid plate T8: bolts, skid plate hole