Y dur carbon siâp H, trawst H, a elwir hefyd yn I-Beam, Weam (sy'n golygu "flange eang"), trawst cyffredinol (UB), joist dur wedi'i rolio (RSJ) neu T dwbl (yn enwedig mewn sglein, Bwlgaria, Sbaeneg , Eidaleg ac Almaeneg), yn drawstiau gyda chroestoriadau siâp I neu siâp H. Elfen lorweddol yr "I" yw'r flange, tra bod yr elfen fertigol yn cael ei galw'n "we".
| Size (MM) h*b*tw*t |
Theoretical weight (KG/M) |
Size (MM) h*b*tw*t |
Theoretical weight |
| (KG/M) |
| 100*50*5*7 |
9.54 |
300*150*6.5*9 |
37.3 |
| 100*100*6*8 |
17.2 |
294*302*12*12 |
85 |
| 125*60*6*8 |
13.3 |
300*300*10*15 |
94.5 |
| 125*125*6.5*9 |
23.8 |
300*305*15*15 |
106 |
| 148*100*6*9 |
21.4 |
338*351*13*13 |
106 |
| 150*75*5*7 |
14.3 |
340*250*9*14 |
79.7 |
| 150*150*7*10 |
31.9 |
344*354*16*16 |
131 |
| 175*90*5*8 |
18.2 |
346*174*6*9 |
41.8 |
| 175*175*7.5*11 |
40.3 |
350*175*7*11 |
50 |
| 194*150*6*9 |
31.2 |
344*348*10*16 |
115 |
| 198*99*4.5*7 |
18.5 |
350*350*12*19 |
137 |
| 200*100*5.5*8 |
21.7 |
388*402*15*15 |
141 |
| 200*200*8*12 |
50.5 |
390*300*10*16 |
107 |
| 200*204*12*12 |
72.28 |
394*398*11*18 |
147 |
| 244*175*7*11 |
44.1 |
400*150*8*13 |
55.8 |
| 244*252*11*11 |
64.4 |
396*199*7*11 |
56.7 |
| 248*124*5*8 |
25.8 |
400*200*8*13 |
66 |
| 250*125*6*9 |
29.7 |
400*400*13*21 |
172 |
| 250*250*9*14 |
72.4 |
400*408*21*21 |
197 |
| 250*255*14*14 |
82.2 |
414*405*18*28 |
233 |
| 294*200*8*12 |
57.3 |
|
|
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