I've noticed that the BlueWater Ropes page describing their 1" tubular climb-spec webbing says:
Favored by professional climbers for its uncompromising construction, this webbing outperforms normal mil-spec webbing in strength, flexibility, knotability and durability.
Lower on the page it says:
Tensile Strength: 4,000 lbf. (17.7 kN)
That seemed exactly the same as 1" tubular mil-spec webbing, so I went and looked at other companies' mil spec webbing.
PMI's is listed as "18 kN (4000 lbf)."
Sterling's is listed as "4000 lbs".
Beal's 26mm tubular webbing is a little weaker at "1500 daN (kg)." By comparison, 1 in. is 25.4 mm, and 1500 daN is 15 kN or 3372 pounds of force. But this webbing is not stated to be mil-spec, and it doesn't look like mil-spec in the picture.
Does anyone know what's going on? Are PMI's and Sterling's mil-spec webbing just unusually strong? Or is the BlueWater Ropes' website mistaken?