performance | unit | Test Methods | Typical value |
density | G/cm3 | ASTMD1505 | 0.93~0.95 |
Yield tensile strength | MPa | ASTMD638M | 19 |
Drop hammer impact strength | J/mm | ISO6603/2 (-20 °C) | twenty four |
Notched impact strength | J/M | ASTMD256 (-40 ° C) | 108 |
Drop test | - | Drop from a height of 10m | No effect |
Environmental stress crack resistance (ESCR, F50) | Hrs | ASTMD1693 (100% antarox) | >1000 |
Vicat softening temperature | °C | ASTMD1525 | 118 |
hydrostatictest | - | ASTMD1998-91 | qualified |
Conditions of Use | - | -50 ° C ~ 80 ° C (90 ° C) | Atmospheric pressure |
Lettuce
Lettuce (var. Ramosa Hort.) leaf with lettuce, also known as the goose tsai, ma son dish, leafs seed, the compositae lettuce.For annual or biennial herbaceous plants, leaves long obovate, densely into cabbage and round shape, can be eaten raw, crisp and refreshing, slightly sweet.
Lettuce from Europe's Mediterranean coast, by wild species domestication.The ancient greeks and Romans to eat at the earliest.
Lettuce was introduced into China's history is long, southeast coast, especially in big city suburb, the cultivation area of guangdong is more, in recent years, the cultivated area is expanding rapidly, lettuce by hotels, restaurants into ordinary people's table.
Lettuce Seeds,Fresh Lettuce Seeds,Artificial Fresh Lettuce,Oak Leaf Lettuce Seeds
Ningxia Bornstein Import & Export Co., Ltd , https://www.bornstein-agriculture.com