Produktoj

Plasta Kubuta Konektilo

Mallonga priskribo:

La materialo de plasta kubuta konektilo estas poliamido.Ni havas grizan (RAL 7037), nigrajn (RAL 9005).La temperaturo estas min-40℃, max100℃, mallongdaŭra 120℃.Flamignila estas V2 (UL94).La grado de protekto estas IP66/IP68.Fajrorezista: Mem-estingebla, sen halogeno, fosforo kaj kadmio, trapasis RoHS.Ĝi povas konveni kun ĉiuj tuboj krom WYK-tubo.Ni havas metrikan fadenon kaj PG-fadenon kaj G-fadenon.


Produkta Detalo

Produktaj Etikedoj

Kubuta Konektilo
G Fadena Konektilo
Poliamida Konektilo

Enkonduko de Elbow Connector

WQW1

Elektra Konektilo
Materialo Poliamido
Koloro Griza (RAL 7037), nigra (RAL 9005)
Temperaturintervalo Min-40 °C, max100 °C, mallongdaŭra 120 °C
Fajrorezista V2 (UL94)
Protekta grado IP66
Fajrorezista Mem-estinganta, libera de halogeno, fosforo kaj kadmio, pasis RoHS
Konveni kun Al-tubo krom WYK-tubo

Teknika Specifo

Artikolo n-ro. Koloro Fadeno Konvenas al ID OD C D E φF Pako
WQW1-M G/B dimensio grandeco de tubo mm mm mm mm mm mm unuoj
WQW1-M10G/AD10.0 Griza M10×1.0 AD10.0 7 17 11.5 34 33.5 16 50
WQW1-M12G/AD10.0 Griza M12×1.5 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW1-M12G/AD13.0 Griza M12×1.5 AD13.0 8 20 11.5 38.5 36 20 50
WQW1-M16G/AD13.0 Griza M16×1.5 AD13.0 11 20 11.5 38.5 36 20 50
WQW1-M16G/AD15.8 Griza M16×1.5 AD15.8 12 23 12 43.5 40.5 23 50
WQW1-M18G/AD15.8 Griza M18×1.5 AD15.8 14 23 12 43.5 40.5 23 50
WQW1-M20G/AD18.5 Griza M20×1.5 AD18.5 15.5 26 13 47.5 45 27 25
WQW1-M20G/AD21.2 Griza M20×1.5 AD21.2 15.5 29.5 13 51.5 48 27 25
WQW1-M22G/AD21.2 Griza M22×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW1-M24G/AD21.2 Griza M24×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW1-M25G/AD21.2 Griza M25×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW1-M25G/AD28.5 Griza M25×1.5 AD28.5 20.5 37 13 59 56 34 20
WQW1-M27G/AD28.5 Griza M27×2.0 AD28.5 21.5 37 13 59 56 34 20
WQW1-M30G/AD28.5 Griza M30×2.0 AD28.5 23.5 37 13 59 56 34 20
WQW1-M32G/AD28.5 Griza M32×1.5 AD28.5 23.5 37 13 59 56 34 20
WQW1-M32G/AD34.5 Griza M32×1.5 AD34.5 25 44 15 70.5 65.5 43 10
WQW1-M33G/AD34.5 Griza M33×2.0 AD34.5 25 44 15 70.5 65.5 43 10
WQW1-M36G/AD34.5 Griza M36×2.0 AD34.5 31 44 15 70.5 65.5 43 10
WQW1-M40G/AD34.5 Griza M40×1.5 AD34.5 31 44 15 70.5 65.5 43 10
WQW1-M40G/AD42.5 Griza M40×1.5 AD42.5 32 52 15 81 73.5 52 5
WQW1-M42G/AD42.5 Griza M42×2.0 AD42.5 36 52 15 81 73.5 52 5
WQW1-M48G/AD42.5 Griza M48×2.0 AD42.5 39 52 15 81 73.5 52 5
WQW1-M50G/AD42.5 Griza M50×1.5 AD42.5 39 52 15 81 73.5 52 5
WQW1-M50G/AD54.5 Griza M50×1.5 AD54.5 43 64 16 91 86.5 68 4
WQW1-M56G/AD54.5 Griza M56×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-M60G/AD54.5 Griza M60×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-M63G/AD54.5 Griza M63×1.5 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-M64G/AD54.5 Griza M64×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-M10B/AD10.0 Nigra M10×1.0 AD10.0 7 17 11.5 34 33.5 16 50
WQW1-M12B/AD10.0 Nigra M12×1.5 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW1-M12B/AD13.0 Nigra M12×1.5 AD13.0 8 20 11.5 38.5 36 20 50
WQW1-M16B/AD13.0 Nigra M16×1.5 AD13.0 11 20 11.5 38.5 36 20 50
WQW1-M16B/AD15.8 Nigra M16×1.5 AD15.8 12 23 12 43.5 40.5 23 50
WQW1-M18B/AD15.8 Nigra M18×1.5 AD15.8 14 23 12 43.5 40.5 23 50
WQW1-M20B/AD18.5 Nigra M20×1.5 AD18.5 15.5 26 13 47.5 45 27 25
WQW1-M20B/AD21.2 Nigra M20×1.5 AD21.2 15.5 29.5 13 51.5 48 27 25
WQW1-M22B/AD21.2 Nigra M22×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW1-M24B/AD21.2 Nigra M24×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW1-M25B/AD21.2 Nigra M25×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW1-M25B/AD28.5 Nigra M25×1.5 AD28.5 20.5 37 13 59 56 34 20
WQW1-M27B/AD28.5 Nigra M27×2.0 AD28.5 21.5 37 13 59 56 34 20
WQW1-M30B/AD28.5 Nigra M30×2.0 AD28.5 23.5 37 13 59 56 34 20
WQW1-M32B/AD28.5 Nigra M32×1.5 AD28.5 23.5 37 13 59 56 34 20
WQW1-M32B/AD34.5 Nigra M32×1.5 AD34.5 25 44 15 70.5 65.5 43 10
WQW1-M33B/AD34.5 Nigra M33×2.0 AD34.5 25 44 15 70.5 65.5 43 10
WQW1-M36B/AD34.5 Nigra M36×2.0 AD34.5 31 44 15 70.5 65.5 43 10
WQW1-M40B/AD34.5 Nigra M40×1.5 AD34.5 31 44 15 70.5 65.5 43 10
WQW1-M40B/AD42.5 Nigra M40×1.5 AD42.5 32 52 15 81 73.5 52 5
WQW1-M42B/AD42.5 Nigra M42×2.0 AD42.5 36 52 15 81 73.5 52 5
WQW1-M48B/AD42.5 Nigra M48×2.0 AD42.5 39 52 15 81 73.5 52 5
WQW1-M50B/AD42.5 Nigra M50×1.5 AD42.5 39 52 15 81 73.5 52 5
WQW1-M50B/AD54.5 Nigra M50×1.5 AD54.5 43 64 16 91 86.5 68 4
WQW1-M56B/AD54.5 Nigra M56×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-M60B/AD54.5 Nigra M60×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-M63B/AD54.5 Nigra M63×1.5 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-M64B/AD54.5 Nigra M64×2.0 AD54.5 48.5 64 16 91 86.5 68 4

 

Artikolo n-ro. Koloro Fadeno Konvenas al ID OD C D E φF Pako
WQW1-P G/B dimensio grandeco de tubo mm mm mm mm mm mm unuoj
WQW1-P07G Griza PG7 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW1-P09G Griza PG9 AD13.0 11.0 20 11.5 38.5 36.0 20 50
WQW1-P11G Griza PG11 AD15.8 14.0 23 12 43.5 40.5 23 50
WQW1-P13.5G Griza PG13.5 AD18.5 15.5 26 13 47.5 45.0 27 50
WQW1-P16G Griza PG16 AD21.2 18.0 29.5 13 51.5 48.0 27 25
WQW1-P21G Griza PG21 AD28.5 23.5 37 13 59 56.0 34 20
WQW1-P29G Griza PG29 AD34.5 31.0 44 15 70.5 65.5 43 10
WQW1-P36G Griza PG36 AD42.5 36.0 52 15 81 73.5 52 5
WQW1-P48G Griza PG48 AD54.5 48.5 64 16 91 86.5 68 4
WQW1-P07B Nigra PG7 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW1-P09B Nigra PG9 AD13.0 11.0 20 11.5 38.5 36.0 20 50
WQW1-P11B Nigra PG11 AD15.8 14.0 23 12 43.5 40.5 23 50
WQW1-P13.5B Nigra PG13.5 AD18.5 15.5 26 13 47.5 45.0 27 50
WQW1-P16B Nigra PG16 AD21.2 18.0 29.5 13 51.5 48.0 27 25
WQW1-P21B Nigra PG21 AD28.5 23.5 37 13 59 56.0 34 20
WQW1-P29B Nigra PG29 AD34.5 31.0 44 15 70.5 65.5 43 10
WQW1-P36B Nigra PG36 AD42.5 36.0 52 15 81 73.5 52 5
WQW1-P48B Nigra PG48 AD54.5 48.5 64 16 91 86.5 68 4

 

Artikolo n-ro. Koloro Fadeno Konvenas al ID OD C D E φF Pako
WQW1-G G/B dimensio grandeco de tubo mm mm mm mm mm mm unuoj
WQW1-G1/4G/AD10.0 Griza G1/4" AD10.0 8.5 17 11.5 34 33.5 16 50
WQW1-G3/8G/AD13.0 Griza G3/8" AD13.0 11 20 11.5 38.5 36 20 50
WQW1-G3/8G/AD15.8 Griza G3/8" AD15.8 12 23 12 43.5 40.5 23 50
WQW1-G1/2G/AD15.8 Griza G1/2" AD15.8 14 23 12 43.5 40.5 23 50
WQW1-G1/2G/AD21.2 Griza G1/2" AD21.2 15.5 29.5 13 51.5 48 27 25
WQW1-G3/4G/AD28.5 Griza G 3/4" AD28.5 21.5 37 13 59 56 34 20
WQW1-G1G/AD34.5 Griza G1" AD34.5 25 44 15 70.5 65.5 43 10
WQW1-G1 1/4G/AD42.5 Griza G1 1/4" AD42.5 36 52 15 81 73.5 52 5
WQW1-G1 1/2G/AD54.5 Griza G1 1/2" AD54.5 39 64 16 91 86.5 68 4
WQW1-G2G/AD54.5 Griza G 2" AD54.5 48.5 64 16 91 86.5 68 4
WQW1-G1/4B/AD10.0 Nigra G1/4" AD10.0 8.5 17 11.5 34 33.5 16 50
WQW1-G3/8B/AD13.0 Nigra G3/8" AD13.0 11 20 11.5 38.5 36 20 50
WQW1-G3/8B/AD15.8 Nigra G3/8" AD15.8 12 23 12 43.5 40.5 23 50
WQW1-G1/2B/AD15.8 Nigra G1/2" AD15.8 14 23 12 43.5 40.5 23 50
WQW1-G1/2B/AD21.2 Nigra G1/2" AD21.2 15.5 29.5 13 51.5 48 27 25
WQW1-G3/4B/AD28.5 Nigra G 3/4" AD28.5 21.5 37 13 59 56 34 20
WQW1-G1B/AD34.5 Nigra G1" AD34.5 25 44 15 70.5 65.5 43 10
WQW1-G1 1/4B/AD42.5 Nigra G1 1/4" AD42.5 36 52 15 81 73.5 52 5
WQW1-G1 1/2B/AD54.5 Nigra G1 1/2" AD54.5 39 64 16 91 86.5 68 4
WQW1-G2B/AD54.5 Nigra G 2" AD54.5 48.5 64 16 91 86.5 68 4

WQW

Akvorezista Plasta Konektilo
Materialo Poliamido
Koloro Griza (RAL 7037), nigra (RAL 9005)
Temperaturintervalo Min-40 °C, max100 °C, mallongdaŭra 120 °C
Fajrorezista V2 (UL94)
Protekta grado IP68, uzante taŭgajn sigelojn (FR)
Fajrorezista Mem-estinganta, libera de halogeno, fosforo kaj kadmio, pasis RoHS
Konveni kun Al-tubo krom WYK-tubo

Teknika Specifo

Artikolo n-ro. Koloro Fadeno Konvenas al ID OD C D E φF Pako
WQW-M G/B dimensio grandeco de tubo mm mm mm mm mm mm unuoj
WQW-M10G/AD10.0 Griza M10×1.0 AD10.0 7 17 11.5 34 33.5 16 50
WQW-M12G/AD10.0 Griza M12×1.5 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW-M12G/AD13.0 Griza M12×1.5 AD13.0 8 20 11.5 38.5 36 20 50
WQW-M16G/AD13.0 Griza M16×1.5 AD13.0 11 20 11.5 38.5 36 20 50
WQW-M16G/AD15.8 Griza M16×1.5 AD15.8 12 23 12 43.5 40.5 23 50
WQW-M18G/AD15.8 Griza M18×1.5 AD15.8 14 23 12 43.5 40.5 23 50
WQW-M20G/AD18.5 Griza M20×1.5 AD18.5 15.5 26 13 47.5 45 27 25
WQW-M20G/AD21.2 Griza M20×1.5 AD21.2 15.5 29.5 13 51.5 48 27 25
WQW-M22G/AD21.2 Griza M22×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW-M24G/AD21.2 Griza M24×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW-M25G/AD21.2 Griza M25×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW-M25G/AD28.5 Griza M25×1.5 AD28.5 20.5 37 13 59 56 34 20
WQW-M27G/AD28.5 Griza M27×2.0 AD28.5 21.5 37 13 59 56 34 20
WQW-M30G/AD28.5 Griza M30×2.0 AD28.5 23.5 37 13 59 56 34 20
WQW-M32G/AD28.5 Griza M32×1.5 AD28.5 23.5 37 13 59 56 34 20
WQW-M32G/AD34.5 Griza M32×1.5 AD34.5 25 44 15 70.5 65.5 43 10
WQW-M33G/AD34.5 Griza M33×2.0 AD34.5 25 44 15 70.5 65.5 43 10
WQW-M36G/AD34.5 Griza M36×2.0 AD34.5 31 44 15 70.5 65.5 43 10
WQW-M40G/AD34.5 Griza M40×1.5 AD34.5 31 44 15 70.5 65.5 43 10
WQW-M40G/AD42.5 Griza M40×1.5 AD42.5 32 52 15 81 73.5 52 5
WQW-M42G/AD42.5 Griza M42×2.0 AD42.5 36 52 15 81 73.5 52 5
WQW-M48G/AD42.5 Griza M48×2.0 AD42.5 39 52 15 81 73.5 52 5
WQW-M50G/AD42.5 Griza M50×1.5 AD42.5 39 52 15 81 73.5 52 5
WQW-M50G/AD54.5 Griza M50×1.5 AD54.5 43 64 16 91 86.5 68 4
WQW-M56G/AD54.5 Griza M56×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW-M60G/AD54.5 Griza M60×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW-M63G/AD54.5 Griza M63×1.5 AD54.5 48.5 64 16 91 86.5 68 4
WQW-M64G/AD54.5 Griza M64×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW-M10B/AD10.0 Nigra M10×1.0 AD10.0 7 17 11.5 34 33.5 16 50
WQW-M12B/AD10.0 Nigra M12×1.5 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW-M12B/AD13.0 Nigra M12×1.5 AD13.0 8 20 11.5 38.5 36 20 50
WQW-M16B/AD13.0 Nigra M16×1.5 AD13.0 11 20 11.5 38.5 36 20 50
WQW-M16B/AD15.8 Nigra M16×1.5 AD15.8 12 23 12 43.5 40.5 23 50
WQW-M18B/AD15.8 Nigra M18×1.5 AD15.8 14 23 12 43.5 40.5 23 50
WQW-M20B/AD18.5 Nigra M20×1.5 AD18.5 15.5 26 13 47.5 45 27 25
WQW-M20B/AD21.2 Nigra M20×1.5 AD21.2 15.5 29.5 13 51.5 48 27 25
WQW-M22B/AD21.2 Nigra M22×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW-M24B/AD21.2 Nigra M24×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW-M25B/AD21.2 Nigra M25×1.5 AD21.2 18 29.5 13 51.5 48 27 25
WQW-M25B/AD28.5 Nigra M25×1.5 AD28.5 20.5 37 13 59 56 34 20
WQW-M27B/AD28.5 Nigra M27×2.0 AD28.5 21.5 37 13 59 56 34 20
WQW-M30B/AD28.5 Nigra M30×2.0 AD28.5 23.5 37 13 59 56 34 20
WQW-M32B/AD28.5 Nigra M32×1.5 AD28.5 23.5 37 13 59 56 34 20
WQW-M32B/AD34.5 Nigra M32×1.5 AD34.5 25 44 15 70.5 65.5 43 10
WQW-M33B/AD34.5 Nigra M33×2.0 AD34.5 25 44 15 70.5 65.5 43 10
WQW-M36B/AD34.5 Nigra M36×2.0 AD34.5 31 44 15 70.5 65.5 43 10
WQW-M40B/AD34.5 Nigra M40×1.5 AD34.5 31 44 15 70.5 65.5 43 10
WQW-M40B/AD42.5 Nigra M40×1.5 AD42.5 32 52 15 81 73.5 52 5
WQW-M42B/AD42.5 Nigra M42×2.0 AD42.5 36 52 15 81 73.5 52 5
WQW-M48B/AD42.5 Nigra M48×2.0 AD42.5 39 52 15 81 73.5 52 5
WQW-M50B/AD42.5 Nigra M50×1.5 AD42.5 39 52 15 81 73.5 52 5
WQW-M50B/AD54.5 Nigra M50×1.5 AD54.5 43 64 16 91 86.5 68 4
WQW-M56B/AD54.5 Nigra M56×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW-M60B/AD54.5 Nigra M60×2.0 AD54.5 48.5 64 16 91 86.5 68 4
WQW-M63B/AD54.5 Nigra M63×1.5 AD54.5 48.5 64 16 91 86.5 68 4
WQW-M64B/AD54.5 Nigra M64×2.0 AD54.5 48.5 64 16 91 86.5 68 4

 

Artikolo n-ro. Koloro Fadeno Konvenas al ID OD C D E φF Paki
WQW-P G/B Grandeco Tuba grandeco mm mm mm mm mm mm unuoj
WQW-P07G Griza PG7 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW-P09G Griza PG9 AD13.0 11 20 11.5 38.5 36 20 50
WQW-P11G Griza PG11 AD15.8 14 23 12 43.5 40.5 23 50
WQW-P13.5G Griza PG13.5 AD18.5 15.5 26 13 47.5 45 27 50
WQW-P16G Griza PG16 AD21.2 18 29.5 13 51.5 48 27 25
WQW-P21G Griza PG21 AD28.5 23.5 37 13 59 56 34 20
WQW-P29G Griza PG29 AD34.5 31 44 15 70.5 65.5 43 10
WQW-P36G Griza PG36 AD42.5 36 52 15 81 73.5 52 5
WQW-P48G Griza PG48 AD54.5 48.5 64 16 91 86.5 68 4
WQW-P07B Nigra PG7 AD10.0 8.5 17 11.5 34 33.5 16 50
WQW-P09B Nigra PG9 AD13.0 11 20 11.5 38.5 36 20 50
WQW-P11B Nigra PG11 AD15.8 14 23 12 43.5 40.5 23 50
WQW-P13.5B Nigra PG13.5 AD18.5 15.5 26 13 47.5 45 27 50
WQW-P16B Nigra PG16 AD21.2 18 29.5 13 51.5 48 27 25
WQW-P21B Nigra PG21 AD28.5 23.5 37 13 59 56 34 20
WQW-P29B Nigra PG29 AD34.5 31 44 15 70.5 65.5 43 10
WQW-P36B Nigra PG36 AD42.5 36 52 15 81 73.5 52 5

 

Artikolo n-ro. Koloro Fadeno Konvenas al ID OD C D E φF Paki
WQW-G G/B Grandeco Tuba grandeco mm mm mm mm mm mm unuoj
WQW-G1/4G/AD10.0 Griza G1/4" AD10.0 8.5 17 11.5 34 33.5 16 50
WQW-G3/8G/AD10.0 Griza G3/8" AD13.0 11 20 11.5 38.5 36 20 50
WQW-G3/8G/AD15.8 Griza G3/8" AD15.8 12 23 12 43.5 40.5 23 50
WQW-G1/2G/AD15.8 Griza G1/2" AD15.8 14 23 12 43.5 40.5 23 50
WQW-G1/2G/AD21.2 Griza G1/2" AD21.2 15.5 29.5 13 51.5 48 27 25
WQW-G3/4G/AD28.5 Griza G 3/4" AD28.5 21.5 37 13 59 56 34 20
WQW-G1G/AD34.5 Griza G1" AD34.5 25 44 15 70.5 65.5 43 10
WQW-G1 1/4G/AD42.5 Griza G1 1/4" AD42.5 36 52 15 81 73.5 52 5
WQW-G1 1/2G/AD54.5 Griza G1 1/2" AD54.5 39 64 16 91 86.5 68 4
WQW-G2G/AD54.5 Griza G 2" AD54.5 48.5 64 16 91 86.5 68 4
WQW-G1/4B/AD10.0 Nigra G1/4" AD10.0 8.5 17 11.5 34 33.5 16 50
WQW-G3/8B/AD10.0 Nigra G3/8" AD13.0 11 20 11.5 38.5 36 20 50
WQW-G3/8B/AD15.8 Nigra G3/8" AD15.8 12 23 12 43.5 40.5 23 50
WQW-G1/2B/AD15.8 Nigra G1/2" AD15.8 14 23 12 43.5 40.5 23 50
WQW-G1/2B/AD21.2 Nigra G1/2" AD21.2 15.5 29.5 13 51.5 48 27 25
WQW-G3/4B/AD28.5 Nigra G 3/4" AD28.5 21.5 37 13 59 56 34 20
WQW-G1B/AD34.5 Nigra G1" AD34.5 25 44 15 70.5 65.5 43 10
WQW-G1 1/4B/AD42.5 Nigra G1 1/4" AD42.5 36 52 15 81 73.5 52 5
WQW-G1 1/2B/AD54.5 Nigra G1 1/2" AD54.5 39 64 16 91 86.5 68 4
WQW-G2B/AD54.5 Nigra G 2" AD54.5 48.5 64 16 91 86.5 68 4

Avantaĝoj de Kubuta Konektilo

Ŝparu tempon

Facila instalebla, nur necesas enmeti kaj forigi sen iloj

Ekonomia

Kun diversigita agado, ĝi povas renkonti la bezonojn de komercistoj en malsamaj industrioj

Bildoj de Plasta Konektilo

PG-Fadena Konektilo
Plasta Kubuta Konektilo
Metrika Fadena Konektilo

La Apliko de Plasta Konektilo:

Ĝi povas konveni kun ĉiuj tuboj krom WYK-tubo.


  • Antaŭa:
  • Sekva:

  • Rilataj Produktoj