GBT554-1996 Marine Double Bollard Type A

GBT554-1996 Marine Double Bollard Type A

Introduction：

GBT554-1996 is a Chinese standard for marine double bollards. Type A refers to the design of the bollard, which features a symmetrical shape with two horns or posts extending from a central base. Double bollards are commonly used in marine environments to secure ships and other vessels to docks or piers.

The Type A double bollard is designed to withstand high loads and provide a secure mooring point for vessels. The bollard is typically made of cast iron or steel and is designed to be bolted to a concrete or steel foundation. The horns or posts of the bollard are designed to provide a secure point of attachment for ropes or cables.

The GBT554-1996 standard specifies the dimensions, materials, and testing requirements for Type A double bollards. This includes requirements for the strength and durability of the bollard, as well as the methods for testing these properties. The standard also specifies requirements for the marking and labeling of the bollard, as well as the documentation that must be provided with each bollard.

Drawing of GBT554-1996 Marine Double Bollard Type A:

Parameters of GBT554-1996 Marine Double Bollard Type A:

Nominal Dia. (mm)	Max. Breaking Load KN	D	D1	h1	h2	H	H1	≧t	≧t1	t2	A	B	≧h	l	L	R	≧t3	Ribs	Weight (kg)
100	29	114	145	40	6	196	150	10	6	7	250	165	50	70	445	15	6	6x40	19
125	39	140	180	50	6	246	190	10	6	8	315	195	60	100	540	15	6	6x50	29
160	49	168	210	60	6	316	250	10	6	9	400	225	70	145	670	20	6	6x60	45
200	78	219	270	70	8	378	300	10	8	9	500	290	85	160	860	25	8	8x70	80
250	118	273	335	80	8	470	380	11	10	9	630	360	100	215	1065	30	10	10x80	141
315	196	325	390	105	10	597	480	15	12	9	800	430	125	325	1300	35	12	12x105	264
355	255	351	420	120	10	663	530	170	13	12	890	480	145	360	1475	40	13	13x120	358
400	314	402	480	135	10	749	600	18	14	12	1000	550	160	400	1630	45	14	14x135	499
450	382	450	545	145	10	841	680	19	16	12	1130	620	170	450	1840	50	16	16x145	680
500	451	508	610	160	12	928	750	20	18	12	1250	690	190	500	2040	55	18	18x160	911
560	549	560	670	175	12	1025	830	22	20	12	1380	750	210	560	2240	60	20	20x175	1208
630	868	610	730	190	12	1152	940	24	22	12	1570	820	225	680	2510	70	22	22x190	1601
710	804	712	840	220	14	1294	1050	25	24	12	1750	960	260	710	2840	80	24	24x220	2252
800	981	813	940	255	14	1480	1200	26	25	12	2000	1100	295	810	3240	80	25	24x255	3071

Model Type: Marine Double Bollard;

Material: Steel Plate;

Certificates: CCS, ABS, BV, LR, NK, RINA, etc.;

Standard: GBT554-1996.

Technical Details:

1. The base height h of the A-type bollards listed in the table is the minimum value, which is only applicable to steel decks. When installed on steel decks with wooden decks, the upper surface of the bases should be 15mm higher than the wooden decks;

2. The piles of type A and B with bollards can be covered with stainless steel plates as required, and the stainless steel grade is 1Cr18Ni9Ti;

3. For A and B-type bollards with a nominal diameter less than or equal to 500mm, they can be directly made of seamless steel pipes or welded with steel plates;

4. For A and B-type bollards with a nominal diameter greater than or equal to 250mm, baffles can be installed as required.