B1 (Guangzhou Metro car)

B1
B1 train at Xiajiao Depot
Stock typeClass B EMU
In service26 December 2005-present
ManufacturerSiemens Mobility and CSR Zhuzhou Locomotive
Built atZhuzhou, China
Family nameModular Metro
Constructed2005-2007
Entered service26 December 2005
Number built120
Number in service120
FormationMcp-T-Mcp
Fleet numbers03A001~03A002-03A039~03A040
Capacity240 per car
OperatorsGuangzhou Metro Group
DepotsXiajiao Depot
Jiahe Depot
Lines served 3 
Specifications
Car body constructionAluminum alloy
Train length59.94 m (196 ft 8 in)
Car length19.98 m (65 ft 7 in)
Width2.8 m (9 ft 2 in)
Height3.8 m (12 ft 6 in)
DoorsElectric doors
Maximum speed120 km/h (75 mph)
Traction systemSiemens Mobility G1500 D1000/300 M5-1 IGBT-VVVF
Traction motorsSiemens Mobility 1TB2013-1GA02 3-phases AC induction motors
AccelerationMaximum 0.9 km/(h⋅s) (0.559 mph/s)
Deceleration1.0 km/(h⋅s) (0.621 mph/s) (service)
1.3 km/(h⋅s) (0.808 mph/s) (emergency)
Electric system(s)1,500 V DC
Current collector(s)Single-arm Pantograph
UIC classificationBo′Bo′+2′2′+Bo′Bo′
BogiesSiemens Mobility SF2500
Track gauge4 ft 8+12 in (1,435 mm)

The B1 (commonly known as Guangzhou Metro Line 3 Trains) is a class of rolling stock built for Line 3 of Guangzhou Metro. They are built by Siemens Mobility and CSR Zhuzhou Locomotive. B1 is the first mass-produced B-class rolling stock for the Guangzhou Metro. They entered service on 26 December 2005.

B1 sets are double-paired for service since 20 April 2010, to expand the service capacity of Line 3.